The 5 x Buys accumulated to 5 x position size.
The Sell closed all 5 x Buys simultaneously as one Sell Trade.
Any Sells after above did / does nothing as there were then no Buys to Close.
PS
A more effective strategy (from your screen shot) would be … If Close crosses over Bollinger Mid then Buy.
Above is often the case if the cross over the Boll Mid is achieved by all / nearly all green bars.
