[Koko] [Bug 506239] New: Black flash when navigating between images

[Nate Graham]

https://bugs.kde.org/show_bug.cgi?id=506239

            Bug ID: 506239
           Summary: Black flash when navigating between images
    Classification: Applications
           Product: Koko
      Version First unspecified
       Reported In:
          Platform: Other
                OS: Linux
            Status: REPORTED
          Keywords: usability
          Severity: normal
          Priority: NOR
         Component: General
          Assignee: unassigned-bugs at kde.org
          Reporter: nate at kde.org
                CC: olib141 at outlook.com
  Target Milestone: ---

STEPS TO REPRODUCE
1. Launch the app showing an image in a folder with multiple images
2. Press the left or right arrow key


OBSERVED RESULT
Current image disappears, then the black background is fully visible for a
moment, and then the new image loads.


EXPECTED RESULT
New image replaces current image without the background showing at all.


ADDITIONAL INFORMATION
Why does this matter?

In addition to it looking a bit weird and distracting, it impairs the use case
of comparing two adjacent images to see the differences between them. Because
switching produces a black flash, my brain somehow mentally resets when
switching images, so it doesn't notice the differences between them.

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