Possible Inconsistent naming behavior

[SirAtilla]

I recently noticed something that possibly started with the 2026-04-03 version impacting filenames with diacritics.

This is my dynamic naming convention I have been using for some time as background:

[IFVALUE]album artist,[album artist],[IFCOMP]Various Artists[][IF!COMP][artist][][]/[album]/[IFMULTI][SETLEN]2,48,,[disc][]-[][track] [title]

I use mostly [Arrange Audio] and FLAC encoding in both Batch Conversion and Music Conversion operations. In the past these operations on Albums with diacritics produced identical filenames. But now FLAC operations are stripping diacritics while Arrange Audio is keeping them and this is inconsistent with past behavior.

A repeatable pattern example with a new Ang

[SirAtilla]

Apparently this forum can't deal with diacritics either as its cuts off the post as soon as one is encountered!

Here is the rest of it in a picture.

[Spoon]

We are looking into it. You are using macOS?

[SirAtilla]

We are looking into it. You are using macOS?

Yes I am - latest macOS Tahoe 26.4.1.

[PeterP]

I'm sorry but I can't replicate the problem, other than by specifically enabling relevant option:

Advanced Settings >> Converter >> Filename Restricted Characters >> (...) >> Allow ISO-8859 characters only

Which would explain why Arrange Audio isn't doing it, as it doesn't seem to obey that setting on macOS - fixing.

[SirAtilla]

I'm sorry but I can't replicate the problem, other than by specifically enabling relevant option:

Advanced Settings >> Converter >> Filename Restricted Characters >> (...) >> Allow ISO-8859 characters only

Which would explain why Arrange Audio isn't doing it, as it doesn't seem to obey that setting on macOS - fixing.

Thanks and that explains the inconsistency. I toggled that setting off resolves the issue.