I can reproduce the same bug in Pinta 0.6 on Ubuntu using ppa:nilarimogard/webupd8 PPA. I can also reproduce the problem on Pinta 0.6 on Windows.
I can reproduce the same bug in Pinta 0.6 on Ubuntu using ppa:nilarimogar d/webupd8 PPA. I can also reproduce the problem on Pinta 0.6 on Windows.