On recording editor.

When a recording already contains a DJ-mixer AR prior to editing, and I go to add DJ-mix ARs to recordings and enable ordering, all but the last recording in the DJ-mix ARs are hidden from view. Disabling ordering again doesn't bring back the hidden ARs. See below screenshots (from test.MB, also happens with mash-up and compilation ARs).

From testing, I can say that this doesn't happen when ARs of the same type already exist (regardless of whether a specific ordering is enabled), it doesn't happen when no other ARs already exist, and it doesn't happen when the already-existing AR is of “performer” or “recording of work” type, but it does happen when the already-existing AR is a DJ-mixer one. Adding a new AR while the first ones are already hidden displays the new ones correctly, but the missing ones remain hidden. Very strange.