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I am using Win 11, Microsoft Powertoys > Fancy Zones to manage the screen space on my 5120 x 1440 monitor. I also have System > Display > Multiple Displayers "Remember window locations based on monitor connection" enabled.

Any program I have besides FF will load up exactly where I had it last. FF shifts I am guessing 8 pixels to the right (or left, as this occurs if I close FF on the right side of the monitor.) If you look at the screenshots, the "opened at default" picture shows what FF looks like when I open it. You can see the xulstore.json file shows the screenX position is -8. If I manually type in 0, close out FF and reopen it, it will still shift back to the right a bit even with the .json still saying 0

How do I do one less thing when I turn the pc on and have FF open exactly as far left as possible instead of shifting over to the right?

Firefox updated to 151.0 last yesterday and now the background of the search selection box has changed color to white from its earlier setting. I have tried a bunch of things but cannot find the CSS needed to restore it to what it was (it was overridden with an image). The image below shows the new, white, version, and what I am trying to do is restore it so that it is overridden with the same background image as the rest of the header. What is the rule needed to override the background of this new box (the box with the colorful "G" and downward caret)?