KOReader Night Mode corrupted

Hi,

I recently purchased a Poke4 Lite and have been very happy with the device UI, design, and performance.  I have been using both NeoReader and KOReader, the latter specifically for Night Mode capability.  The inverted display was functioning fine until I installed AIReaderXPro to test and try the app.  I immediately noticed some odd behavior with both apps and while using night mode in KOReader the display is heavily ghosted with many artifacts, etc. The same behavior happens in AIReaderX night mode.

Screen refreshes don't clear up the issue.  Essentially, it appears that the b/w contrast and scaling has been heavily skewed.  It is unusable in night mode since text is not legible and the ghosting is so prevalent.

I have uninstalled AIReaderX and reinstalled KOReader but the issue is not fixed.  I have also double checked all app and system settings.

I am hoping that some system setting was corrupted or inadvertently changed through the installation and use of AIReaderX.  I would hate to have discovered a defect in the device!  If anyone has experienced this and knows of a solution, please advise!

Thanks