Hello,
It turns out to be a WPML problem.
Solution:

• WP console =>> WPML = >> Settings =>> Custom Fields Translation
• look to column “Custom fields”, change radio button to “Copy” of the following rows: footer, header_title_bar, header_transparency, layout, sidebar

The above change tells WPML to sync the original page’s layout settings with the translations when the original is updated.

Thanks @Guenni007, you are correct. Problem solved.

Hi Ismael,

Thanks for you insight. Yes, WP Rocket is deployed. I will consult their support team first. Stay tuned. Thank you.

Hi Rikard, you CSS can enlarge the image to fit the container of post in mobile view, it simply works. Thanks.
Hi Guenni007, thank for help. Your CSS is step further to enhance the look of the image in mobile view. Thanks.

— Case Closed —

Thanks for your quick reply.

Take a look at the first <h1> and the following <p> below

The computed font style for these elements different:
<h1>:

h1, h2, h3, h4, h5, h6, #top .title_container .main-title, tr.pricing-row td, #top .portfolio-title, .callout .content-area, .avia-big-box .avia-innerbox, .av-special-font, .av-current-sort-title, .html_elegant-blog #top .minor-meta, #av-burger-menu-ul li {
    font-family: open sans condensed,helveticaneue,helvetica neue,helvetica-neue,Helvetica,Arial,sans-serif;
}

<p>:

html, body, div, span, applet, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr, acronym, address, big, cite, code, del, dfn, em, img, ins, kbd, q, s, samp, small, strike, strong, sub, sup, tt, var, b, u, i, center, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, article, aside, canvas, details, embed, figure, figcaption, footer, header, hgroup, menu, nav, output, ruby, section, summary, time, mark, audio, video {
    margin: 0;
    padding: 0;
    border: 0;
    font-size: 100%;
    font: inherit;
    vertical-align: baseline;
}

thus it read:

:lang(zh-hant) body {
    font-family: open sans,Arial,Helvetica,microsoft jhenghei,微軟正黑體,pmingliu,新細明體,hiragino sans tc,冬青黑體,sans-serif!important;
}

Please close this post as settled. The issues disappeared suddenly. Thank you so much for kind support.

Thanks for supporting. The problem take place on every pages created using “Advanced editor”. If you edit any existing Elements (except “Text Block”) on any existing pages, you cannot type any characters there.

Thanks for help, problem solved.

Fantastic support! Solved. Thank you.

I reported the same case to WPML, their team reported that they would contact your side very soon.
Kindly update me for any info. Thank you very much.

Hi Andy,
thx for reply.
1) flushing permalinks setting: Done
2) allowing deactivation of all plugins: Okay, pls go ahead.
thx again for support.

Thanks for your suggestion. Once the plug-in WP-SpamShield is deactivated, the problem is gone. It’s a plug-in issues, please mark this post as solved.

It works perfectly.

• This reply was modified 9 years, 4 months ago by asiabchk.

Thx for update, I have input it. However, the font-family style can’t apply on AV Special Heading. May I have you further help?

Hi Josue,

Thanks for reply.

I use neither plugin nor new installation.

I create a new page “http://www.example.com/2nd/&#8221; which is the descendant of homepage “http://www.example.com/&#8221;.