Created attachment 165096 [details] failing output SUMMARY *** NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols. See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports *** Using Pandoc as the preview engine and the filter pandoc-plantuml-filter. If I paste a premade plantuml bloc, the preview is perfect. But if I edit the block, I get an image not found in the preview. However, I checked and Pandoc generated the image. I can find the picture in my personal directory STEPS TO REPRODUCE 1. use the preview engine pandoc 2. add the custom parameter --filter pandoc-plantuml (with the filter installer and plantuml installed) 3. past the example : ```plantuml Alice -> Bob: Authentication Request Bob --> Alice: Authentication Response Alice -> Bob: Another authentication Request Alice <-- Bob: another authentication Response ``` 4. modify anything in the example which does not break UML syntax OBSERVED RESULT The diagram is not displayed, and instead you get a picture not found replacement. EXPECTED RESULT Get the diagram updated and shown.