Trade results being deducted wongly

I have observed one oddity recently that trades seem to be deducted wrongly from my storehouse.
Last week Saturday, I still had 62k Magic beans.
I sold 7000 Beans since that time - but my storehouse is now at 42k Beans!

Yesterday morning. I was certain I had 52k Magic Beans. I put 4x1000 for sale, 1x1000 sold, 3x1000 expired.
In the evening, I had 48k left - the 3k expired did not refund.

I considered that maybe it'll resolve itself.
I put up another 4x1000 for trade - this morning I logged in, 4x1000 sold: my store was down to 42k beans, case proven: results are miscalculated!

(ticket to support already opened - just wanting to let others know to observe their trades carefully)