Drag and drop doesn't work

[PavelTurk]

Describe the bug
Drag and drop operation with files doesn't work

To Reproduce

1. Build a binary distribution on Ubuntu 20 following the instructions.
2. Run the binary_distrib/linux64/run.sh script.
3. Open the GitHub page and signed in.
4. Open the foo project.
5. Click Edit in the foo project README.
6. Take a *.png file from your computer and try to drop it into the README.
7. Nothing happens.

Expected behavior
I expect that file will be loaded and a link will be added to my README.

Versions (please complete the following information):

• Ubuntu 20.04.6 LTS
• OpenJDK version "25.0.1" 2025-10-21
• JCEF Version = 146.0.10.353
• CEF Version = 146.0.10
• Chromium Version = 146.0.7680.179

Additional context
If I use my Google Chrome (no cef, no java cef) then everything works as expected