OpenAtlas

I wasn't able to reproduce the bug. Tested in demo, demo-dev and THANADOS with Firefox. Steps:

• Click on edit at a place/sub unit
• Add a line
• Save entity
• Edit again
• Delete the line
• Save the entity

Line isn't visible anymore.

If you took other steps please specify. Have you tried force reloading the page to clear cache? Which browser/version are you using?

Also I saw no line at the provided link, only a shape which I didn't tried to delete for obvious reasons but I also tested shape in demo and could delete it without a problem.

It turned out that the linestring entry in the gis.linestring table had "shape" as type. This seems to have caused the but. See screenshot. Maybe this was still cached somewhere.
I manually deleted it from the db via sql and inserted a proper polygon.
I think we can close it for now. If it reoccurs somehow, we can take care of it then.

Thanks for reporting and glad that we could solve it so fast. Closing the ticket but we keep it as reference in case something similar happens again.