Popup menus are never closing in Linux

[RichardJECooke]

Popup menus, like in the matrix target selection or here in the filter selector, are staying open forever in Reaper, even when I close and reopen the plugin. They disappear only when reopening Reaper. Using Ubuntu 23.04, Gnome, X, Nvidia.

The problem does not occur in the standalone version. It does happen in Ardour too. Tried both the CLAP and VST3 versions - same bug.

Vital forum issue links:

• https://forum.vital.audio/t/how-to-close-popup-menu/12870 (mine)
• https://forum.vital.audio/t/ui-linux-cannot-close-dropdown-menus/3275 (from 2020 using Wayland)

[RichardJECooke]

Awful workaround: clicking the choose filter button in the Voice section closes the popup menu in the Matrix section, and vice versa. So you can reveal the part of the synth you need to work on by alternating between those two tabs