Affected versions

• 82.0, 83.0a1

Affected platforms

• macOS 10.15, macOS 11;

Steps to reproduce

1. Launch Firefox, windowed mode;
2. Drag the browser close to the top-bar;
3. Enable the Search-bar;
4. Click inside the search-bar;
5. Press and hold any letter, such as c

Expected result

• macOS letter suggestion should be above the browser menus;

Actual result

• mac-letter suggestion covered by search-suggestion;

Regression range

• will check and provide one asap;

Additional notes

• attached recording to illustrate the issue;
• S4 as suggested severity due to usability and impact; issue can be "bypassed" if the user drags the browser down so the menu opens above.

I have attempted to find a regressor, but it appears as this is no recent regression. This issue still reproduces on builds ar old as Nightly v55. Could not launch older builds than that using mozregression. I will assume that this is not a regression, but an implementation issue.

Please note that this issue does NOT occur in the case of the address bar.
Please NI me if you consider more investigation is needed.

Yup can reproduce this here