Dear community, good day!
I have been working with ARIS for a long time, but for the first time, I have encountered an unsolvable problem: suddenly, when scaling the window, the vertical split of the main screen has turned horizontal. And I can't restore the vertical split no matter what I try. I have already attempted everything I could think of, but it didn't work.
I am really hoping for your assistance because the horizontal split is very inconvenient.

Hated horizontal slit: