Descriptive Problem Summary:
In the map editor and right-clicking on a tile and pressing T will perform a Delete All instead of a Delete Topmost Obj like the context menu would have you believe.

Numbered Steps to Reproduce Problem:
1. Open Dream Maker and a project that has a map file to play with (or create an all new one; doesn't matter)
2. Open the map editor
3. Right click on a populated tile (as in not already null)
4. Once the context menu is open, press the T key on your keyboard
5. Witness the entire tile being deleted

Code Snippet (if applicable) to Reproduce Problem:
N/A

Expected Results:
Only the topmost obj to be deleted

Actual Results:
Entire tile is deleted

Does the problem occur:
Every time? Or how often? Every time
In other games? Probably
In other user accounts? Yes
On other computers? Yes

When does the problem NOT occur?
Maybe in the stable release? Didn't try.

Did the problem NOT occur in any earlier versions? If so, what was the last version that worked? (Visit http://www.byond.com/download/build to download old versions for testing.)
Not sure. Just encountered this issue.

Workarounds:
Manually delete the specific obj through the context menus, or delete all and rebuild the tile minus the thing you wanted to delete.