When hide one album, other same directory albums are also hidden

[tiny^2soft]

XnView Mobile 1.04(81) / Android 16 / Sony Xperia 1 VI

For example, the directories exist as follows:

Pictures/foo/2025/
Pictures/bar/2025/

When I hide 'foo/2025' only, both 'foo/2025' and 'bar/2025' are hidden.

Is this case a specification or a bug?