Logo resize issue

Hello – fantastic theme, thanks. I find that on Chrome, there are times when I scroll down (and the menu bar and logo decrease in size), and then back up to the top, the menu bar increases back to full height, as it should, but the logo stays small (when it should be at the larger size). The logo continues to stay small until I refresh or go to another page. This happens rarely, and I can’t cause it to happen on demand, but it happens enough that the client is concerned. Any thoughts? I appreciate it!