STEPS TO REPRODUCE 1. Open ''About' page. 2. Open 'Sources' page. 3. Click 'Add Source...' button. OBSERVED RESULT 1. The popup shows and hides immediately. 2. Second and subsequent 'Add Source...' button presses shows the popup. SOFTWARE/OS VERSIONS Operating System: KDE neon Developer Edition KDE Plasma Version: 5.15.80 KDE Frameworks Version: 5.54.0 Qt Version: 5.11.2 Kernel Version: 4.15.0-42-generic
Hmm, cannot reproduce.
I also can't reproduce with discover 5.15.2 on Arch Linux.