Hi,
when a tab is placed at a position that is not a multiple of the tab-width, "Convert tabs to spaces" does not work.
e.g. a line with 3 spaces, one tab character followed by a regular character (0x20 0x20 0x20 0x09 0x65)
When the tab size in PNotepad is set to 4, convert tabs to spaces does not replace the tab character (it does nothing)