Differently wide taskbars on two monitors

[Mikaelo]

@Tihiy I use a vertical taskbar on two monitors and I have different widths on both. The left, wider cannot be narrowed more.

[Tihiy]

No idea? The one on the left has right behavior.

[Mikaelo]

21 minutes ago, Tihiy said:

The one on the left has right behavior.

Yes, I understand

[Mikaelo]

22 minutes ago, Tihiy said:

No idea? 

I have no idea

[Mikaelo]

@Tihiy, I found the reason. UltraMon app enable this.