Comment 23 for bug 1874217

An annoying "feature" of this bug is with application drop down menu's. If selecting (say) File from an app in the LHS the options of this menu drop down in a box on the left side in the RHS. Action expected: Selecting "File" should produce a menu directly under the option.
Related to this is a converse effect. With Thunderbird in the RHS, replying to an email causes a reply email dialog to pop up (possibly off-screen) in the scrolled LHS.