You have bug in Excel new dynamic unique function

Just been figuring out why all results did not match when i first short unique and then sample data in power query. I took me hours to find out that short unique does not short all uniques. I had same text at beginning and then end of cell there where values 2,5 bar, 2,5  bar and

2,5 Bar. Unique values shows 2,5  bar and 2,5 Bar not 2,5 bar. When I change 2,5  bar to 2,5 bar. unique shows only 2,5 bar and 2,5 Bar was wanish. But exsample also same beginning text and value 1,2 bar and 1,2  bar the unigue function returned both values correct. So there must be some kind of bug of that function. I have not checked all but those came up from column witch has 60.000 rows.