[X] Changes to directories with very larger number of files are corrupted

[anotherron]

Using 2.46 on Win 7.

Steps to create bug:
Change to directory with sub-directories containing ~5,000 mp3 files with ID3v2.4 APEv2 tags.
Select all files. (Same problem exists if selecting only a file subset.)
Open 'Extended Tags' dialog.
Edit TAG-A.
Change TAG-A name to TAG-B.
Select OK.

Results:
TAG-A removed.
TAG-B did not exist.
Can go back to original state using Undo Save Tag.

I can supply a before and after file demonstrating bug.

[Florian]

I've tried to reproduce it but everything works as expected here.

Can you reproduce it when you try it with two example files?