Hey,
is just me? The buttom “Undo” is not coming back border styles changes.
Hi @lucaspchara, thanks for your report. I have tested this in the designer, but I am unable to reproduce this. Could you provide some more detail about the issue you are having? Here is our guidelines for reporting bugs and getting help with support issues:
Cheers, Dave 
Now is working. 
I think it was a specific error, if it happens again I post a video and try to better observe the steps I did to give the error.
Thank U.