There is an answer about how to fix it there? Because I can't find it. Can you pleas tell me what to do? Is there any way to change the resolution from the GUI?
No, there is no answer in that closed bug report. You can see that they were waiting from more information from the original reporter @Constantin , but that did not happen. I am sure I saw the problem but I could not reproduce so could not contribute. I suggest that you file a new bug report with screenshots, etc.
No, there is no setting for the console window in the GUI.
MDA/CGA/EGA/VGA text modes all output oddball resolutions by today's standards. They're wider than 4:3 if used with square pixels, which tends to trip up some monitors.
"Now you see it, now you don't" - that's what happened to me on the Asrock IPMI KVM view, too, when I joined in the initial bug report. I felt forced to conclude that I had dreamt it ...