Delay in visualizing image positioned absolute over Fullscreen Slider

Hi I am working on a home page and I need to set a Fullscreen slider with one single picture. Over that I want to show a graphic image (I have it in png and svg), over which a special header appears. Both these elements have been placed using the position absolute and adjusting top/right values.

However when I load the page in front-end I can see the graphic image and text appearing for a millisecond. Then they disappear and appear again when I start scrolling the page. I checked if there was some further advanced rule applied to the elements but there not. How can I keep them visible since the beginning of the loading page?

Here’s my debug code

[av_fullscreen size='2048x2048' control_layout='av-control-default' slider_navigation='av-navigate-arrows av-navigate-dots' nav_visibility_desktop='' nav_arrow_color='' nav_arrow_bg_color='' nav_dots_color='' nav_dot_active_color='' image_attachment='' animation='slide_up' transition_speed='' autoplay='false' interval='5' conditional_play='' img_scrset='' lazy_loading='disabled' id='' custom_class='home-open-img' template_class='' av_uid='av-ldk05icf' sc_version='1.0']
[av_fullscreen_slide slide_type='image' id='116' position='center center' video='https://' mobile_image='' fallback_link='https://' title='' video_cover='' caption_pos='caption_right' custom_title_size='' av-desktop-font-size-title='' av-medium-font-size-title='' av-small-font-size-title='' av-mini-font-size-title='' custom_content_size='' av-desktop-font-size='' av-medium-font-size='' av-small-font-size='' av-mini-font-size='' font_color='' custom_title='' custom_content='' heading_tag='' heading_class='' link_apply='' link='lightbox' link_target='' button_label='Click me' button_color='light' link1='manually,http://' link_target1='' button_label2='Click me' button_color2='light' link2='manually,http://' link_target2='' overlay_opacity='0.5' overlay_color='' overlay_pattern='' overlay_custom_pattern='' av_uid='av-uv4f' sc_version='1.0' video_autoplay='' video_controls='' video_mute='' video_loop='' overlay_enable=''][/av_fullscreen_slide]
[/av_fullscreen]

[av_image src='http://localhost:8888/rialto1082.com/wp-content/uploads/2023/01/bridge-graphic.png' attachment='97' attachment_size='full' copyright='' caption='' image_size='no scaling' styling='' box_shadow='none' box_shadow_width='10' box_shadow_color='' align='center' font_size='' overlay_opacity='0.4' overlay_color='#000000' overlay_text_color='#ffffff' animation='no-animation' animation_duration='' animation_custom_bg_color='' animation_z_index_curtain='100' parallax_parallax='' parallax_parallax_speed='' av-desktop-parallax_parallax='none' av-desktop-parallax_parallax_speed='' av-medium-parallax_parallax='none' av-medium-parallax_parallax_speed='' av-small-parallax_parallax='none' av-small-parallax_parallax_speed='' av-mini-parallax_parallax='none' av-mini-parallax_parallax_speed='' hover='' blur_image='' grayscale_image='' fade_image='' appearance='' css_position='' css_position_location=',-50%,150%,' css_position_z_index='10' av-desktop-css_position='absolute' av-desktop-css_position_location=',-50%,260%,' av-desktop-css_position_z_index='10' av-medium-css_position='absolute' av-medium-css_position_location=',-30%,260%,' av-medium-css_position_z_index='10' av-small-css_position='absolute' av-small-css_position_location=',-30%,260%,' av-small-css_position_z_index='10' av-mini-css_position='absolute' av-mini-css_position_location=',-30%,260%,' av-mini-css_position_z_index='10' transform_perspective='' transform_rotation=',,,' transform_scale='1.5,1.5,1.5' transform_skew=',' transform_translate=',,' av-desktop-transform_perspective='' av-desktop-transform_rotation=',,,' av-desktop-transform_scale=',,' av-desktop-transform_skew=',' av-desktop-transform_translate=',,' av-medium-transform_perspective='' av-medium-transform_rotation=',,,' av-medium-transform_scale=',,' av-medium-transform_skew=',' av-medium-transform_translate=',,' av-small-transform_perspective='' av-small-transform_rotation=',,,' av-small-transform_scale=',,' av-small-transform_skew=',' av-small-transform_translate=',,' av-mini-transform_perspective='' av-mini-transform_rotation=',,,' av-mini-transform_scale=',,' av-mini-transform_skew=',' av-mini-transform_translate=',,' mask_overlay='' mask_overlay_shape='blob' mask_overlay_size='contain' mask_overlay_scale='100%' mask_overlay_position='center center' mask_overlay_repeat='no-repeat' mask_overlay_rotate='' mask_overlay_rad_shape='circle' mask_overlay_rad_position='center center' mask_overlay_opacity1='0' mask_overlay_opacity2='1' mask_overlay_opacity3='' link='' target='' title_attr='graphic-motif' alt_attr='graphic motif' img_scrset='' lazy_loading='disabled' av-desktop-hide='aviaTBav-desktop-hide' av-medium-hide='aviaTBav-medium-hide' av-small-hide='aviaTBav-small-hide' av-mini-hide='aviaTBav-mini-hide' id='' custom_class='' template_class='' av_element_hidden_in_editor='0' av_uid='av-ldk1oq0a' sc_version='1.0' admin_preview_bg=''][/av_image]

[av_one_full first min_height='' vertical_alignment='av-align-top' space='' row_boxshadow_width='10' row_boxshadow_color='' margin='0px' margin_sync='true' av-desktop-margin='' av-desktop-margin_sync='true' av-medium-margin='' av-medium-margin_sync='true' av-small-margin='' av-small-margin_sync='true' av-mini-margin='' av-mini-margin_sync='true' mobile_breaking='' mobile_column_order='' border='' border_style='solid' border_color='' radius='' radius_sync='true' min_col_height='' padding='' padding_sync='true' av-desktop-padding='' av-desktop-padding_sync='true' av-medium-padding='' av-medium-padding_sync='true' av-small-padding='' av-small-padding_sync='true' av-mini-padding='' av-mini-padding_sync='true' svg_div_top='' svg_div_top_color='#333333' svg_div_top_width='100' svg_div_top_height='50' svg_div_top_max_height='none' svg_div_top_opacity='' svg_div_bottom='' svg_div_bottom_color='#333333' svg_div_bottom_width='100' svg_div_bottom_height='50' svg_div_bottom_max_height='none' svg_div_bottom_opacity='' column_boxshadow_width='10' column_boxshadow_color='' background='bg_color' background_color='' background_gradient_direction='vertical' background_gradient_color1='#000000' background_gradient_color2='#ffffff' background_gradient_color3='' src='' attachment='' attachment_size='' background_position='top left' background_repeat='no-repeat' highlight_size='1.1' animation='' animation_duration='' animation_custom_bg_color='' animation_z_index_curtain='100' parallax_parallax='' parallax_parallax_speed='' av-desktop-parallax_parallax='' av-desktop-parallax_parallax_speed='' av-medium-parallax_parallax='' av-medium-parallax_parallax_speed='' av-small-parallax_parallax='' av-small-parallax_parallax_speed='' av-mini-parallax_parallax='' av-mini-parallax_parallax_speed='' css_position='' css_position_location=',-30%,150%,' css_position_z_index='' av-desktop-css_position='absolute' av-desktop-css_position_location=',-40%,320%,' av-desktop-css_position_z_index='15' av-medium-css_position='absolute' av-medium-css_position_location=',-30%,320%,' av-medium-css_position_z_index='15' av-small-css_position='absolute' av-small-css_position_location=',-30%,320%,' av-small-css_position_z_index='15' av-mini-css_position='absolute' av-mini-css_position_location=',-20%,320%,' av-mini-css_position_z_index='15' link='' linktarget='' link_hover='' title_attr='' alt_attr='' mobile_display='' mobile_col_pos='0' id='' custom_class='' template_class='' aria_label='' av_uid='av-12txf' sc_version='1.0']
[av_heading heading='Rialto 1082<br/>Venice Bed & Breakfast' tag='h1' style='blockquote modern-quote modern-centered' subheading_active='subheading_below' show_icon='' icon='ue800' font='entypo-fontello' size='' av-desktop-font-size-title='' av-medium-font-size-title='' av-small-font-size-title='' av-mini-font-size-title='26' subheading_size='' av-desktop-font-size='' av-medium-font-size='' av-small-font-size='' av-mini-font-size='16' icon_size='' av-desktop-font-size-1='' av-medium-font-size-1='' av-small-font-size-1='' av-mini-font-size-1='' color='custom-color-heading' custom_font='#ffffff' subheading_color='#ffffff' seperator_color='' icon_color='' margin='' margin_sync='true' av-desktop-margin='' av-desktop-margin_sync='true' av-medium-margin='' av-medium-margin_sync='true' av-small-margin='' av-small-margin_sync='true' av-mini-margin='' av-mini-margin_sync='true' headline_padding='' headline_padding_sync='true' av-desktop-headline_padding='' av-desktop-headline_padding_sync='true' av-medium-headline_padding='' av-medium-headline_padding_sync='true' av-small-headline_padding='' av-small-headline_padding_sync='true' av-mini-headline_padding='' av-mini-headline_padding_sync='true' padding='10' av-desktop-padding='' av-medium-padding='' av-small-padding='' av-mini-padding='' icon_padding='10' av-desktop-icon_padding='' av-medium-icon_padding='' av-small-icon_padding='' av-mini-icon_padding='' link='' link_target='' id='' custom_class='' template_class='' av_uid='av-ldk1eds5' sc_version='1.0' admin_preview_bg=''][/av_heading]
[/av_one_full]