Okay, I just got a new computer, and I've noticed a glitch that doesn't happen on my old one - when dragging and dropping, the position shown is somewhat off.
The first difference between the two to come to mind that may be relevant is that the new PC has a 1080p display, whereas the old PC had 1360x768. The second thing is that the new one has AMD graphics, whereas the old one had switchable graphics between Intel HD and an NVidia chip (with me generally running the editor on the Intel chip).
Clearing the config file does not fix the issue.
EDIT: Changing display resolution to 1360x768 does fix it, so it's related to resolution somehow. Can anyone using resolutions other than 1360x768 or 1920x1080 let me know if they have (or don't have) similar issues, particularly if you're using a resolution above 1360x768?
Has anyone else noticed anything like this? I can't think of any obvious reason why it would occur, so any information from other people may help track it down.
EDIT: Added a screenshot to show what I mean. I've only actually moved the mouse about 3~4 pixels from the terrain piece's position, not as far as the drag/drop image would suggest (and if I were to release the mouse button, it would be positioned accurately for how much I've moved the mouse; not at the position the drag/drop image is shown). If you look closely, you'll also notice the drag/drop image is of a slightly smaller size than the actual piece.
I've now got Delphi 7 set up on my new PC, so I'll be able to take a look at this.
EDIT: Might be a general Delphi 7 issue, as it happens even with dragging/dropping the toolbox windows (stats editor, etc)...
EDIT: Okay, the issue isn't directly related to 1080p, but rather to the "Change the size of all items" option in the control panel, which is automatically set when using 1080p it seems...