"Fix name to ordering convention" skips by 2

[auw001]

Describe the bug
The option of fixing name to ordering convention skips by 2 sometimes. If the previous number is 02, then applying "Fix name to ordering convention" will make it 04.

To Reproduce
Create a folder with some files already having ordered numbers in the title. Create new file under that folder and apply "Fix name to ordering convention." It skips by 2 the first time it is applied in the folder, but repeating this process it works normally.

Expected behavior
Expected to display the next number in the sequence, got the number two places ahead.