Why is there a dotted border around the desktop shortcut?

Question

Windows

Good day!
Today I have prepared a question for you, to which I did not find a clear answer in the entire Russian-speaking Internet, although, at first glance, the question is trifling.
For the second time in a few months, I have a dotted frame around the shortcuts on my desktop.
Windows 10.
When you click on a shortcut and then on an empty spot on the desktop - there is such a dotted frame around the shortcut -
you press RMB-refresh - it disappears only for a moment - until the next click on the shortcut. Launching the app doesn't help either. In the performance parameters, the visual effects of the jackdaw are sort of like it should be. Yes, and I did not change anything there from the family.

screenshot

When you press Tab - the frame jumps from the shortcut to the start icon - the quick access toolbar and back to the shortcut.
They said that this is from inaccurate use of the ctrl key when selecting several objects on the desktop?
how to remove it?! PS I have not tried rebooting the computer yet, but it does not help many. I want to find some rational solution.

Answer 1

She annoys me. It appears when you do something with the keyboard with focus on the desktop, even just press the start button - it appears and does not disappear again until the explorer is restarted.
SOLUTION:
In the registry, go to HKEY_CURRENT_USER\Control panel\Desktop.
There are two parameters - FocusBorderWidth and FocusBorderHeight. Both set to 0, restart Explorer. Ready!

Answer 2

I've always had it for as long as I can remember. It never occurred to me to get rid of her, because personally she did not interfere with me in any way.

Answer 3

When running for a long time, the explorer.exe program crashes.
To quickly restart this program, copy the following and paste it into notepad. Save with .bat extension to your desktop.
If such an error occurs, simply double-click the left mouse button to launch the created BAT nickname. Everything will be back in a second!
@echo off
taskkill /f /im explorer.exe
start "" /min "%SYSTEMROOT%\explorer.exe"