i run into very few bugs actually, if any at all that actually have to do with a problem with the program that i cant easily figure out and work around in a small amount of time, and the stuff i do is quite complex, much more than what ive seen done in any of the projects on your site. infact of all those projects, the level of polish i see in them is in on par with games ive seen made for one hour competitions on this site, by myself and others, which isnt all that high. with code like that, and sloppy work its a sure shot that your gonna be neck high in bugs of your own doing.
from what im seeing you werent given much time in those 9 weeks to actually work on it, or you rather chose not too, further resulting in your frustration with the program and feeling it was "buggy". there are a small deal of work arounds you have to understand to use this program without running into bugs, but theyre not all that difficult to figure out. After messing something up once you'll know what to avoid doing/using. even without those things being avoided construct still presents you with a great deal more power than you make it out to have, or rather seem to be.
I'm interested in what these bugs might be, and i'm pretty sure 90% of them if not more have to do with you inexperience with the program rather than construct itself, due undoubtedly the small window of time you all had to complete the games.