Dolphin doesn’t use the locale ‘number formatting’ settings for displaying the number of files in a folder. For example, for a folder containing 1009 files, it *should* show

  1,009 items

for an ‘en-US’ locale (which uses a comma as the thousands separator) and

  1 009 items

for a locale that uses a space as a thousands separator (e.g. the Norwegian Nynorsk (nn_NO) locale).

Instead, it just shows

  1009 items

Note that for file *sizes*, the correct formatting *is* used, e.g. ‘1,009 B’ for a 1009-byte file.

I’ll attach a screenshot and a reproducible example.