Describe the bug

Steps to reproduce

1. prepare a folder "5000p" with 5000 PNG images on a local machine
2. log in to an ocis instance via web ui, create a "sub" folder
3. upload "5000p" into "sub"
4. while the upload is in progress, use another browser window to
5. visit "sub" -> the folder "5000p" is there. OK
6. refresh this view a few times. Only the folder "5000p" is there. OK
7. visit "5000p" -> a file listing appears. OK
8. click back to "sub" -> some files appear there, next to "5000p". BAD
9. refresh. The files disappear, only "5000p" remains.
10. This can be repeated as long as the upload is in progress. Okayish.
11. Afterwards, no glitches occur

Expected behavior

All files only appear in the correct folder, where they really, are, regardless what the users click in the web ui

Actual behavior

Clicking the parent "sub" folder via breadcrumbs, some files appear there during upload, that should not.