Is there an existing issue for this?

• I have searched the existing issues

Problem

when switching to the inverted grayscaled mode and zooming in or out, the program rapidly switches between displaying the non-inverted grayscaled version and the inverted grayscaled option (unpleasent) until (it seems) some cache of lower resolution document renders (displayed between full resolution document renders) has all the renders (from different levels of zoom/scale)

same thing happens again when switching back to the non-inverted non-grayscaled mode. i.e. now the cached images are the inverted grayscaled ones so there is flickering when switching back and zooming too.

i made a video showcasing the issue (sorry, the upload to github failed for some reason): https://files.annaaurora.eu/zathura-flickering.mkv

Steps to reproduce

1. open a document, if possible one that's very bight or dark
2. press ^r to turn on inverted grayscaled mode
3. zoom in or out

Expected behavior

no flickering, i.e. if the theory with the caches is right, have 2 caches where each only gets used in the respective mode.

zathura version (zathura --version)

0.5.11

girara version (zathura --version)

0.4.5

zathura backend

?