I found a bug or glitch

[DSPsky]

When using the clone bars button or whatever it’s called, if you click on it multiple times and try to click on the shortening of the steps the program freezes.

[musikbear]

When using the clone bars button

You are in Beat&Bass-editor -right?
I could not reproduce.
What OS?
What ver. of LMMS?

[DSPsky]

Yes I believe, I was using the latest beta version for Linux from website, I’m using lubunu 18.04,

You really have to click lots of times until it gets really small

[musikbear]

latest beta version for Linux from website, I’m using lubunu 18.04,

Then my test is not relevant. I am on windows

[Gps]

I can't reproduce this with rc 7 nor with rc8. ( on openSUSE, Linux)

Are you sure you're using rc 7 or rc 8 ?