Lexmark XC4342
When printing high toner coverage A5 short edge media with a fuser with a brown fusing belt, it is possible to get a belt wrap jam.
Change paper settings to light or light smooth.
Print a quality test page to observe any changes.
If the issue persists, contact Lexmark Technical Support.
Observe the correct storage environment for envelopes for better printing results.
Watermarks are not appearing when printing from Google Chrome and Microsoft Edge