Enabling "Reduce Motion" makes the "show desktop preview" work oddly

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Describe the bug

OSX Mojave

When I select: Reduce Motion blur in the Settings than the function "mission control" works, but the "show desktop preview" does not really work reliabely. Only every 3rd time. This problem does not occur, wehn "reduce motion" is not enabled in the accessibility secion. A fix would be awesome. Thanks!

Affected input device (e.g. MacBook Trackpad, Magic Mouse/Trackpad, Touch Bar, etc.):

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Device information:

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  • BetterTouchTool version: (please post the exact version - not just "the latest one")

Additional information (e.g. StackTraces, related issues, screenshots, workarounds, etc.):