Can reproduce it in OOo3.0

Pls download the attachment for checking.
In the attachment, can find function: =VLOOKUP(A7;'a-a'.A1:B5;2;0)
a-a is the sheet name which contains a special character, you can also name
the sheet as a&a or a^a that contains special characters like "-(){}&^".
Select A1 in VLOOKUP, Shift + F4, find it is no change.
But if select 'a-a'.A1, Shift + F4, it becomes absolute reference
"$'a-a'.$A$1"(without quotes).

If rename the sheet "a-a" as "sheeta", then select A1 (not 'sheeta'.A1), Shift +
F4, 'sheeta'.A1 becomes absolute reference "$'sheeta'.$A$1"(without quotes).
IMO, it works well.

What I want to say is sheetname which contains the special characters or not
should gives users the same result.

Regards
Li Meiying