Hi there and thank you for your reply.
When I wrote my previous message, the second third-party plugin had been deactivated. However, I deleted it a moment ago and the ugly overlapping still exists. Please, find the other screenshot I’ve made, using another browser.
https://drive.google.com/file/d/1-WXGdhTSHbNTj95z-BpAzguiHP6YKfe8/view?usp=drive_link
What could be done as a next step to redesign?
