If you press and hold a textbox on a touchscreen in Windows 8, a rectangle appears after some time. Here's a picture of it:
This rectangle is supposed to disappear when you release your finger. The context menu will now appear. (See Notepad for example.)
In a Delphi program, however, the rectangle is still there while the context menu is visible. It won't disappear until the menu closes. You can try this with a new VCL app with a TMemo.
How do I solve this?
Delphi still uses pre-Windows 8 UI events (ie. no WM_Pointer), but everything works fine except for this issue.