Inverted Lift on Delta Wing

I submitted a bug report about this yesterday and I saw it being posted afterwards on the bugs section, but when I look today I can't find the whole post. Now that I read this thread I think it explains the bug I tried to report. I also used long wings that started before the CoM but the control surfaces are quite a bit behind it.

The cause might be explained but I think this is something we could consider a bug. It would be nice to see a fix for this, meaning that the point at which the control surface applies it's force to the craft should be somewhere around in the middle of the control surface.

I made some delta wings before and can't recall having that issue, of course canard wings makes it more responsive but not a must (Mirage-2000 doesn't have ones and it used to be among the best fighter jets) .
What's the controls being used? Pitch or sliders? I'm not much familiar with the phone version . Also gyroscope on planes can cause a number of issues and can be worse with certain auto-pilot sittings (we do fly by auto-pilot , I think it better be called Fly By Wire instead)

this is why you have canards with delta wing lol

@AndrewGarrison Alrighty Thank you so much!

This is an issue that can happen when the wings are very long and the force of the wings are actually being applied at a position in front of the CoM of the craft. If you break your wings up and create a separate wing section with the control surface that is completely behind the CoM of the craft then it will work properly.