For bugs that may not be immediately replicable (for example: finishing a Junction task but it not registering for you, even if it registered for your squad mates, etc.), you are welcome to send us your log file so we can better identify the root of the problem.
If you wish to send us your log file, please follow these steps:
Quit the game after encoutering the bug, before loading up another mission.
Open \Users\yourwindowsusername\AppData\Local\Warframe (t