Sending away patients will send away the wrong one if there's another patient under your popup button

Literally the title.

Steps to reproduce:
1. Select a random patient you want to send away
2. Click the red SEND AWAY button
3. When the popup appears that wants your confirmation, click it
4. If there's another patient under your Send Away button at the moment you click it, they will be sent away instead of the patient you actually wanted to get rid of
5. Lose money because of your mistake! Happens to me all the time if I do it in a crowded hospital

See screenshot.