[Bug?] Can no longer upload a file to a branch that is not the default branch

Hi there,

I’m trying to upload a file to branch “Prepare-v0.10.21” that is not the default branch. The default branch is “collector”.

  • I start on this page: https://github.com/2Abendsegler/GClh
  • I switch the branch from default branch “collector” to branch “Prepare-v0.10.21”.
  • Then I click to button “Add file” and choose “Upload files”.
  • On the next page the default branch “collector” is selected again. I can not upload files to branch “Prepare-v0.10.21”.

For details please see the recorded .gif file.

I’ve been doing this for years. Does anyone know what I’m doing wrong?

Thank you in advance.
Frank (account: 2Abendsegler)