(Issue or unintended behaviour?) appendonly file extremely large & keeps growing in size

[soarpasser]

On Windows 10 0.9.30 legacy build, I've come to notice that appendonly.aof is getting abnormaly bloated.

The above is a database of around 6000 archives, and appendonly.aof is at around 1.2GB while the database.rdb file stays at around 13.5MB.

Furthermore, as more archives and metadata is added to the filesystem, appendonly.aof keeps growing in size and there is no way to slim it down.
Deleting appendonly.aof will reset the entire database and trigger a rescan - after rescanning and rebuilding the database the file size is still roughly the same.

Not sure that this should be intended behaviour - is there any way to fix this issue or at least workaround it?