Why does Microsoft Edge sometimes (randomly) partially minimizes itself?

I still cannot figure out why does Microsoft Edge sometimes (randomly) partially minimizes itself. I usually run about 5-10 open Edge Windows in FULL-DISPLAY-SIZE mode, and within many of them, I may have anywhere from 2 – 10 tabs.

My system is this: Running Windows 11 Pro (16 GB) Desktop PC with two monitors in full 4K (3840 x 2160), using DisplayPort connectors with Nvidia 4070 Ti card with driver 595.79. My Display Scale is set to 150% (recommended). I have my “Power” setting set to the following: Turn Off monitor after 15 minutes, Make my Device Sleep = Never and Make My Device Hibernate = Never.

Please see the next 3 screenshots of what happens:

This is when the Edge window is randomly minimized.



This is when I try to click the “Max the Window” and as soon as I hover my mouse hover over it, I get these different “looks” pop up. I just ignore them and click on the Maximize and this happens:



I then click Maximize again, and the Edge is back to full, normal size as I always want it to be.



What going on there? I have read that some USB devices my trigger this, but I don’t plug in or take out any USB devices, and sometimes my system works perfectly for days at a time, and sometimes, these random Edge window minimizations happen 3 or 4 times per day. Also, sometimes these issues “fix themselves” on their own without any clicking on Edge Window size manipulation.

This situation has been going on for at least 6 months, so plenty of Windows’s updates and graphic driver updates have happened over the time. I have not changed any hardware in my PC for over a year and otherwise, my system works perfectly.

Any suggested fixes are much appreciated.

The way the OS handles windows size is not like it was back in older OSes.The key is to never run a window maximized. It remembers the last size it was before it was last closed. Here's what works for me consistantly every time.

Never set an app to run full screen. Instead set it for run as "normal window".
Open the app. Drag the edges and corners of the window using the double ended arrow to size it the way you want, leaving a couple of pixels at top and both sides.(however much you need to see the borders of the window.)
Note: If you run with taskbar hidden, leave about a half or so inch inch at the bottom which is enough space for your taskbar to unhide.i Once you get it sized to "almost full screen," exit and reopen the window. Windows will remember your sizing and your task bar will be visible.

Know that once you click the maximize button it screws everything up and you have to do it all over again.

If you want a window to open in a particular position on the screen, you can drag an un-maximized window where you want it to be on the creen. Windows will remember that position, too.

If you use snap layouts, always remember to double click on the title bar to return the window to its original size before closing the window while in snap view. If you don't, you will have to resize it the next time it opens because Windows will remember the snapped size, and open to that size. If you don't use snap layouts, I suggest you disable the feature. settings>system>multi-tasking. IMO snap layouts are the best thing to come along since sliced bread, but a lot of people don't use them.

open edge
maximize it
restore (unmaximize) it
when it is in that small form, resize it via dragging the edge (when you get the resize cursor)

once resized, hold the CTRL key and click the X to close edge
reopen edge. did it save the sizing? if so, you should be good. if not, let me know.

I think you may be touching WIN+Down. If so, press WIN+Up.