Steps to reproduce:
- Write something in OneNote
- Copy that text
- Try pasting in Stack Overflow
- It opens the image upload dialog box (Example: The image in this question)
PS: I tried pasting the same in the Visual Studio Code editor, and it pasted the text properly.
OS Version: Windows 10
I tested and replicated it on the following two browsers:
- Chrome: Version 77.0.3865.90 (Official Build) (64-bit)
- Edge: Microsoft Edge 42.17134.1.0