Steps to Reproduce:
please check this video. Thank you.
I think the title of the issue can be a bit more specific, like "add horizontal scroll on files tree".
I agree not seeing files with longer paths/filenames is very annoying.
Ok, so to summarize the video, you have the "Horizontal Scrolling" setting turned on, and for a while horizontal scrolling works, but then it stops working. You noted that you have the VTools extension installed - do you still see the problem if you run with extensions disabled? When horizontal scroll stops working, can you run the command Developer: Toggle Developer Tools to see if there is anything in the console?
i've tried.
there was no error when the bug occurred or not.
i turned off Vtools then it doesn't occurred yet.
is there any option to hide side & bottom bar automatically?
Yes, there is a window.statusBar.Visible setting and a window.activityBar.Visible that can be used to hide those
well sadly workbench.statusBar.visible & workbench.activityBar.visible is not what i wanted to hide.

i want to hide what green arrow pointed not red arrow :(
That's what vTool does.
You can use the Toggle Sidebar Visibility(Cmd+b) and Toggle Panel Visibility (Cmd+j) commands to hide these
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Happy Coding!
Most helpful comment
i've tried.
there was no error when the bug occurred or not.
i turned off Vtools then it doesn't occurred yet.
is there any option to hide side & bottom bar automatically?