Kerbal Space Program

1.3.0.1804 Win x64 (tested in en-us and es-es)

There is something weird going on with the MET time in Flight View:
- when clicking the MET/UT toggle, it does not switch back from UT anymore
- once this has been done, when reloading, it advances to the end of days (year 999, day 499, 05:59:59)
- the error then persists across savegames in a game session

A video recording to show these errors more clearly: https://youtu.be/JvqjebbexvQ

Repro steps:
- start a new game
- load a new/stock craft onto the launchpad or runway
- click the MET top left to switch to UT - confirm it changes to UT
- click again to switch back to MET - the button changes to 'MET', but the timer string stays in UT.
- click any number of times to confirm it is now stuck this way.

- revert out all the way to the main menu
- load a different game, or start a new one
- load a new/stock craft onto the launchpad or runway
- notice the MET timer has advanced to the end of days
- click the MET top left to switch to UT - confirm it changes to UT
- click again to switch back to MET - the button changes to 'MET', but the timer string stays in UT, and is now stuck, as before.