[qt5] Avoid infinite repaints upon hovering the folders/tags panels
#324
| Job | Run time |
|---|---|
| 13s | |
| 2m 28s | |
| 1m 55s | |
| 1m 26s | |
| 2m 1s | |
| 5m 44s | |
| 35s | |
| 14m 22s |