Darkroom does not update when selecting a different picture while previous picture is "working.."
1. Open Darktable in the Darkroom view with any picture (old picture).
2. Do some modifications to the picture, so that processing takes a few seconds.
3. After modifying some module, while the "working.." notification is still displayed in the canvas, double click on any other picture (new picture) in the film strip.
The film strip highlights the new picture, centers on it and shows it in the main canvas after processing.
The film strip highlights the new picture, centers on it but continues to show the old picture in the main canvas.
Kubuntu 18.10 64bit
Intel I7 3517U, 4GB RAM, 1920*1080 Display resolution