This is a common, recurring and current problem mentioned in other threads.

2 things

A tile will not throw you off when its time is expired, but you cannot go back to it, even if it still appears to be there.

There is certainly a problem when you play on  a pc, especially at changeover times, but players say it is happening on other devices.

The situation appears to be worse of late because either accidentally,or on purpose the time for these tiles to be yieldable seems to have been cut.

They have seem to have been invader and ghost kill lairs that disappear after the event when they never did before.