Skybox rotates when saving mission

[MoerasGrizzly]

Some bizarre shenigans here, hmm.
Okay so I was working on Bp2-06, and made the mistake of saving the mission in FSO 26.0.0 RC2

Before:

After:

Before:
+Skybox Orientation: 1.000000, -0.000000, 0.000000, 0.000000, -0.000000, 1.000000, -0.000000, -1.000000, -0.000000
After:
-1.000000, -0.000000, 0.000000, -0.000000, -0.000000, -1.000000, 0.000000, -1.000000, 0.000000

[wookieejedi]

Hmm I can't seem to recreate this. I made a mission with that original skybox orientation in FRED on 25.0.1 and then saved it. Then opened it in 26.0RC2 and saved it and the orientation did not change.

Does this happen reliably for you? IE save a mission in 25.0.1 and open it in 26.0RC2 and it saves a different orientation?

EDIT: Ah Goober informed me he has a lead and will ideally have a fix later this evening.

[Goober5000]

Looks like this is a side-effect of #6255. The two functions handled the 0,0 state differently.

[MoerasGrizzly]

Hmm I can't seem to recreate this. I made a mission with that original skybox orientation in FRED on 25.0.1 and then saved it. Then opened it in 26.0RC2 and saved it and the orientation did not change.

Does this happen reliably for you? IE save a mission in 25.0.1 and open it in 26.0RC2 and it saves a different orientation?

EDIT: Ah Goober informed me he has a lead and will ideally have a fix later this evening.

Notably it happens after opening and then saving the mission in Fred 26. So fred loads the mission just fine, but when saving it ocasionally flips things around.