I found a couple of posts with file attachments where it fails to extract the file id cleanly:
$ gallery-dl -K "https://www.bellazon.com/main/topic/4322-candids/page/1896/#comment-5982750"
···
Keywords for filenames and --filter:
------------------------------------
category
bellazon
count
3
extension
avif
filename
tiffany70909-1-
id
14935704&key=cec3f64fe2d9110a9c23e9fa56a293d2
···