$BTC #virtual

Can someone answer me and explain?

Does Binance automatically remove us from the operation when our "isolated margin" approaches 50% consumed?

I put an "Isolated Margin" of US$ 100.00 to operate US$ 500.00 on the VIRTUAL/USDT Pair through the Spot Market (5x margin).

I bought Virtual at US$ 1.81 and I already imagined that it could go back and make a retracement before going up again! Then it made a retracement and I was at US$ 47.00 (negative) against my operation. But I still had US$ 53.00 of margin from those US$ 100.00 I put, meaning that the asset could still drop about 15% and I would still have margin not to be removed from the operation. But I was taken out of the operation!

Suddenly the asset started to rise again and got close to my entry price and I found it strange that my negative trade balance was not decreasing nor getting close to becoming positive.

Then I found it odd that the PNL was not moving and decided to check the history and there it was:

"(...) Sell Order Executed". They took me out of the operation and I still had 50% of the isolated margin that I put! So I got pissed off and closed everything and shut down the damn app!

Dude, how can this happen?

Is there a system programming to take you out of the operation when your margin approaches 50% consumed? And if I had US$ 10 thousand highly leveraged, would they also take me out and liquidate me even if I still had 53% margin and generate 47% loss?

Can someone answer me?