Adobe Muse. How to remove the vertical white bar on certain browsers?

Question

Web development

Who has a lot of experience in working with Adobe Muse, help to deal with the problem. Namely, the appearance of a white vertical bar on the right with a flexible site width in Chrome, and if I remake it to a constant width, then the problem in Chrome goes away, but appears on another Samsung Internet browser.
I’ll immediately discard the possible answers:
- There are no hidden objects on the right
- Adding overflow does not help
the screen for clarity I am attaching (ps and the Chrome strip was even larger)