Window flickers only if opended through "open file location"

It happens when the window is maximized. I don't have explorer modifying programs installed.

Welcome to the forum. May I suggest you try this. Set file explorer to open as normal window rather than maximized. Open it and drag the edges of the window until it covers almost the entire screen, leaving a couple of pixels on all sides. Close file explorer and reopen to make sure it opens to the way you sized it.
Close file explorer and do another "open file location" as in your video. Does it work correctly?

I do not open any of my apps as maximized as doing so has caused me weird problems in the past. I do this procedure instead since explorer remembers the size of a window when it was last open.

I already did it as you can see in the gif, I tried it now too as you suggested. It doesn't happen when the windows is in this form, only when the window is supposed to be maximized and also only when opened by "open file location", if I call %appdata% for example the window open maximized without that flickering issue

I would prove if it is a windows problem, an application conflict problem, or a user account problem.

1. First Perform a clean boot to eliminate software conflict causing the issue. If it doesn't happen in a clean boot, you have some software conflicting with Windows. Brink's procedure will help you weed out which one. Perform a Clean Boot in Windows 11 to Troubleshoot Software Conflicts Tutorial

2. You can prove that there's no issue with your user account by creating a new local account. Set it as administrator. If the issue does not exist using this test account, then you have some sort of corruption in your user account.

3. If neither 1 or 2 points you to the cause,
Make sure you have no corrupt system files that is causing this problem. Open a command prompt as administrator and type sfc /scannow
Pay attention to the scan results to see if SFC found anything it could not repair. If it found corruption it could not fix followup with this command (note the spaces)
dism /online /cleanup-image /restorehealth
Restart computer
(Note-you can follow up with another sfc /scannow command to make sure that dism repaired the files)

4. Do a repair install if 1-2 or 3 did not point to the problem.
Repair Install Windows 11 with an In-place Upgrade Tutorial

Let me add to my post #4. Also Check if this issue remains in safe mode. Open Msconfig, select safe boot, select minimal. If it works correctly in thi setup, you have some driver causing the problem. I would look at the graphics driver first. Then chipset and bios.
By the way, it would help us help you if you would fill out the system specs section of your forum profile.

Thank you for the suggestion, I did all of them, sfc didn't find errors neither DISM. The same thing happens, and I don't think something is touched in Windows since this is a new clean install.

I found that with "open file location" the window opens to its last size before being maximized and then it's maximized right after.

Isn't there a way to control how windows open in "open file location" from regedit?

I just checked my own. It's about the same as yours. The window is not maximized. The bottom portion of file explorer populates a split second before the file path in address bar
It's my first video using snipping tool so it's not as good as yours but you can see what i mean.

If you maximized the window and closed it, then tried "open file location" it will open in that last form size before being maximized (which is the last window state before closing). But if you open any window directly or through a command it will open maximized, the only problem is with "open file location".

Just to add, the screen is not Static like a picture on the wall but Dynamic, always being changed or refreshed, sometimes being so fast as not noticed. Open a program draws the screen, sometimes has to overwrite the previous instance which can cause that flash effect.

I'm aware of that since I did some programming and resizing a window is always sending even messages.

It's not a big deal to be honest, I just wanted to know if there is a way to control how the window behaves when it's opened through "open file location" because it doesn't just open it to its last maximized state but to its size before that and then it maximizes it.