Mission Editor : Triggers disappear

[GreyEcho]

I've been playing around with the mission editor and I came across the following issue that I was able to reproduce consistently, whichever mission I ran.

 

Basically, some triggers/combinations of triggers and actions aren't saved when I close the trigger pane. I happened especially with the following combination:�

- Trigger: ONCE

- Condition: TIME MORE 10s

- Action: RADIO TRANSMISSION

 

Is it an intended behavior, a known bug, or am I the only one with the problem?�

 

Video of the problem (sorry for the poor quality)�: