Readme, readme and README on external HDD

I have next cloud installed (docker) and connected external HDD.
When I create readme file in a location on a external HDD (or click 'Add notes, lists or links,…) 3 files are created (, and Other that that everything works 0K.
Other things I noticed:

  • if I delete any of the readme files all 3 are deleted
  • if I ssh on HDD there is only 1 readme file
  • this doesn’t happen on “internal” storage

Any ideas?

Same problem…