Ubuntu
qtstyleplugins-src package

  1. Bug #1906138
  2. Comment #1

Comment 1 for bug 1906138

Revision history for this message
Doug Brown (macg3) wrote :

I finally found some time to look further into this, it appears to be an upstream problem with qtstyleplugins.

The logic in the gtk2 plugin (used by Ubuntu MATE by default) doesn't animate indeterminate progress bars if QT_NO_ANIMATION is defined, yet it seems to be intentionally defined to disable animation for some reason:

https://code.qt.io/cgit/qt/qtstyleplugins.git/commit/src/plugins/styles/gtk2/gtk2.pro?id=102da7d50231fc5723dba6e72340bef3d29471aa

Removing DEFINES += QT_NO_ANIMATION from gtk2.pro fixes the problem and allows the indeterminate progress bars to animate properly.