It turns out that Qt 5.11.3 has the same regression as 5.12, so I had to make a new tarball:
https://download.kde.org/stable/krita/4.1.7/krita-4.1.7.101.tar.gz I haven't had time to sign it yet. This is only relevant for distributions or distribution systems that are up to date enough to use 5.11.3, but don't use 5.12 yet. -- https://www.valdyas.org | https://www.krita.org
