Reproducible: Mission end screen breaks game

[Mudfam]

You know when the mission ends, the screen comes up and then it just goes black and the mission never actually ends? And then you have to alt+F4, and you lose your rewards, and you have to do that sortie all over again, etc.

This extremely common bug is a 100% reproducible silly UI bug.

If a player (probably only the host) is viewing the mission progress (Tab) when the mission ends, the mission and the game will break for the entire squad as described above. As this is very commonly done by bored people waiting at extraction the bug is frequently encountered.

This game breaking bug has been around for quite some time now, still wasting everyone's time, please fix it.

[sam686]

This problem also happens in solo exterminate. Find and go to extraction point, hold down TAB, kill the last enemy to complete objective while holding down TAB. The same can happen in solo endless survival, find and go to extraction early and keep holding down TAB starting at 4:58 of time counting up.

There are more annoyance in Solo mode: every time I go to extraction point when mission is not done, then map overlay goes away, TAB mission progress goes away, and some Warframe abilities turns off (Excalibur exalted blade, Oberon renewal). It looks like the game is trying to take those off, but fails to do so while already at the extraction point.

[sam686]

Just happened to solo capture mission while extraction is available, by rapidly pressing TAB with a low frame rate of 22 FPS. I limit FPS by using NVidia profile inspector on NVidia graphics card.

If client (not host) with a ping number at the bottom left with show FPS on, then wait for host to quit or lose connection or try disconnecting from internet until the game goes into loading screen, then reconnect internet. Doing this may give a good chance to save rewards. While clients have this possible workaround, hosting player and solo player have no workarounds and will always lose rewards from this bug.