I tried it once again after I have set OOS parts again (clicking on the OOS Most used configs) and now the OOS samples look correct. Maybe it could be related to the way how I have created a custom project - cloning a different project and then just changed symbol.
this is not bug, but the standard behavior for AUDCAD market, in some parts you have just a few trades.That's why you see incosistent OOS parts. See attached screenshot for another rinstrument.