Bump:
Not sure how many of these bugs have been reported, but here are the ones I have found.
There are a few that involve multiple key presses:
up + right + 6 = jump, right, portal in the 9 direction
up + right + 4 = jump, right, portal in the 7 direction
up + left + 7 or 1 = jump, left, portal in the 4 direction
up + left + 9 or 3 = jump, left, portal in the 6 direction
up + left + 8 or 2 = jump, left, no portal shot
you can't change the fast/slow portal while any other key is pressed
Simple glitches:
When portal shot through top of screen, it appears as a solid line to the right, It also crashes it on exit
If you drop a box on where the lift is on the right, it is eaten by the lift...
If you drop a box in the left where the elevator is, you can't pick it up again.
If you jump to jump on a block, to the right or to the left, with a block not right above your head, but one above that, you can't make it onto the block you want to get on.
You can't place a portal on blocks above a box dropper.
I you are walking through a portal with a box, and before it draws the box on the other side while your holding it, and you drop it, that box is gone...
Level editing glitches:
Fortunately, none in the editor itself.
For each individual level:
>6 blocks doesn't work *
>10 buttons cause crash on exit *
>29 buttons cause ingame crash *
You can get stuck in any one block wide column.
If you put a portal on the floor in a one block tall area, you can't get out of it there.
If you put an energy ball emitter on the right hand wall, the energy ball travels diagonally.
If you shoot a portal up or down on the blocks above and below you when you first start the level, it will sometimes glitch, placing the portal facing out of the calc screen on the left hand wall.
Couple other things you might want to add, that are minor annoyances:
In your own pack, text between levels Make it so you can go to specific levels in the pack, like on the main one.
Edit: Also, because of a few crashes because of bugs, I created this program. It also has a small help section for editing levels. (Requires DCS7) Just make sure there is something stored in str1 before executing.
https://www.cemetech.net/programs/index.php?mode=file&id=1019