I tried your string a couple of weeks ago when I had a W10 update installed - which was an update that incapacitated my PC altogether.
I then experienced even complete crashes of the PC so that the whole OS did not answer any more when I tried either to save the name or scroll through the list in MP3tag.
After correcting the W10 update I never had any problems with this band name. I can see it in full beauty and resize columns for this name just as quickly as for other (shorter) fields.
I'd say: definitely no bug.
Perhaps a feature request.