Can't change attachements?

Whenever I attempt to change attachments and proceed into the match, all attachments revert to the default ones from this blueprint.

However, when I return to the loadout, all equipped attachments are present! Could this be a bug? Why am I unable to customize my blueprint weapon?

Whenever I attempt to change attachments and proceed into the match, all attachments revert to the default ones from this blueprint.

However, when I return to the loadout, all equipped attachments are present! Could this be a bug? Why am I unable to customize my blueprint weapon?