On Kobo Forma, when long-pressing on a word so that it gets highlighted and looked up in a dictionary, Polish words with special characters do not fully highlight. The software seems to be interpreting the special characters as word-breaks (like a space). As a random example, pressing on “pokazała” selects only “pokaza”. The special characters in Polish are ąśżźńłóęć
(I guess this is where bugs are reported to Kobo… I can’t find anywhere else…)