Merged Block Not Timed if Last Frame is Hidden

[Enthalpy]

Currently, the timer of a merged block is treated as a proceed condition of the last frame in the block instead of the last visible frame. Because you can hide individual frames of a merged block, you can turn a timer off by hiding the last frame.

Do we want to change this behavior? If we kept it as-is, hiding the text of the last frame of a timed and merged frame would require putting the timer on its own frame, which seems clunky. If we changed it, we lose the ability to toggle whether frames are timed. I can't think of a use case for that feature, but it's still a loss.

Any feedback on this one?

[Enthalpy]

This bug currently makes Jean of mArc's The Omniscient Game unplayable. Round 5 relies heavily on timed blocks that end in a hidden frame. My intuition at this point is to fix it as a bug, due to the v5 behavior. I don't believe anybody uses timer-toggling, and even if they do, they can use variables instead.