Table arrangement bug in previously made apps

I know there is a bug in the table arrangement. I just found a way to improve an app I previously made (not published) if I alter the previously made app (which uses table arrangement) will it glitch too?

Thanks.

Sorry I am not an elegant speaker, I hope I made my question clear enough.

Rick

We do not know. Why not make a copy, make the changes, and see what happens, or while you are making changes, take out the offending table arrangement layout/blocks and replace.