Corners option fill default to 0p
Whenever I create a new text box, I get the default of outline set to 1p. I always forget to change this, and in editing have to go back and remove all these boxes from picturs, etc. This wastes a lot of time. Have not found where I can set this, saving a changed empty doc does not seem to work.
Bastian S. commented
Check your object formats:
A: With all documents closed (This will fix newly created documents but not your existing docs)
B: In the document that has the problems (see above... already created documents will have the wrong styles as well)
C: Click the rectangle-tool without creating one - do you have a stroke set? if so the new frame will be created like this - likely caused by "A/B"