If you are in the middle of placing an item and the research windows interrupts you and you click, the item will be placed behind the window- building mode is not put on hold and the game is not paused.
This can potentially cost the player a lot of money and even bankrupt you in the early game.
This is also a problem if the game window is not active, and the player clicks on the window again to activate it and an item is placed. For multi-monitor setups it would be nice if this was fixed.
Just encountered it again: Selected the Resource Conveyor, started building (so mouse button is clicked “down”), whilst doing that the research window (Finished yay) pops up. So you have to let go of the mouse button and it builds your Conveyor.
Not a big problem, but yes: when the Research Finished Screen pops up the current buildng process should be interrupted.
Or the other way around: don’t let the research popup “pop up” before a building process has been finished.