Moving Diagrams.net diagrams corrupts diagram storage in wiki page

[kbfifi]

Using 2.5.214 with docker-compose on Ubuntu 18 rock64 SBC

Problem reproduction:

• Create a diagram:
  
• select diagram text (drag from right to left with mouse):
  
• Move selected text to new position
• Now the screen looks like this:
  
  Or even this if moved to another position:
  

Workaround:

• use cut and paste (ctrl-X, Ctrl-V)

It took me a while to realize it's got to do with dragging. Up-til-now I've simply recreated the diagrams. Not very fun to do ;-)