bopo – the + Button Intermittently Not Working

Most likely after the latest BOPO update, I feel there’s a bug.
Someone also sent me a screenshot and said they added products to the bundle, but it doesn’t allow them to add the last two items. https://prnt.sc/eCx5_gT87D4A

https://mtbeauty.co.il/product/11-%d7%91%d7%a9%d7%9e%d7%99%d7%9d-%d7%a7%d7%98%d7%a0%d7%99%d7%9d-%d7%91-250-%d7%a9%d7%97/

I tried it myself and it does work, but suddenly during the process, the ‘+’ button just became unclickable. It seems like it can happen randomly—no matter how many times you click it or try scrolling up and down a bit, sometimes it lets you click and sometimes it doesn’t.

Something there isn’t very stable when it comes to clicking the ‘+’ button.
Sometimes it’s clickable and shows the popup, and sometimes it’s not clickable.
It’s also hard to tell exactly when or at what stage it happens