Losing focus during a pressed mouse action (ex. place moat) locks the action

[TheRedDaemon]

This is most noticeable when using a window mode without a mouse clipper and leaving the screen.
Keyboard actions seem to be unaffected.

gynt encountered a weird issue where he was unable to place buildings. They just hovered on the mouse. The situation was unrecoverable. And sadly not reproducible. It might be related, though.

The most interesting thing would be, if the game actually has a method to handle something like this.
The first thing would be to check how the losing focus system works/was changed by me. Maybe one can use the games handling. Otherwise, manually sending a cancel action (full right click?) might be required.
Maybe the later could also be used as a temporary fix.

[TheRedDaemon]

Mouse related issues should be fixed as of commit f5db9a1.

However, the issue with the stuck arrow keys remains.
The problem at the moment is that an input based counteraction would break if the keys are changed.

One possibility would be to also get the two places for the status inputs (4 for the keys, one extra for down), but this requires more addresses.
It also depends a bit on how a possible rework of the input would look like.
Therefore this issue remains open, but as game bug, since the keys also get stuck in vanilla.