Question: Messed up purchase screen

[dTerm]

Hi folks,

I stumbled upon a rather odd problem, when setting up a battle via the battle generator.
I was buying some attack helicopters, when all of a sudden the unit selection screen jumped back to the main purchase screen with more than one page of the formations missing.

I was able to reproduce it with different setup options under v17 and v17.5a. It happens, when I buy 5, or sometimes 7, attack helos straight in a row as the first five/seven sections. First I thought it might be, because I was pushing the mouse buttons too fast.

Can someone please have a look?