PincushionMan: There are quite a few bugs in vanilla Xcom, and the item limit bug was one that I typically encountered on Base Defense missions.
Here's where to read more about game breaking Xcom bugs. Pay particular attention to the "Game Destroying Bugs"
Other bugs of note:
All versions save Xcom CE: Saved games revert to beginner level
Chrysallids will always have their impossible stats
Using Psi too much (either side) causes crash to big text (potentially fixed with newer DOS4GW?)
Losing another game by running out of cash and reloading to a different one can get you shut down of the month if you are not cash positive, even if you have money in the bank.
Stunning a civilian makes them not count for rescue purposes.
Mind controlling a civilian turns him into an alien.
Wow, I scanned through the list of bugs and that is an incredible amount of known bugs! :) I've played the game for a long time and hadn't really noticed any of them myself. I can't remember if I encountered any bugs that I actually recognized. It's possible I have and just forget... I'm not a spring chicken these days. :) Cool to know all of this stuff though and what one can do about it if desired! Thanks for the info!