Incorrect transition cancelling

[IvanMikhayluts]

When transition cancelled animation is jerky.
How it works now:
You have two states (A and B) and transitions based on some conditions. The "Allow exit during transition" checkbox is checked. Transactions take some time. You change a variable to start the transition from A to B. During the transition (something between A and B is displayed on the screen), you change the variable back. The state suddenly switches to B, and then the transition from B to A is played.

What behavior is expected:
After changing the variable back, the transition from the current view to state A will be reproduced without suddenly switches.