Not sure if this is 1.4.13.2 specific, but I've noticed it while messing about on the unstable branch. The BF solar panel when retracted still blocks lasers and probably other projectiles. See below:
Nice catch! And could I get that tech’s snapshot? I’ve been trying to figure out how to use the new weapons, though it looks like that was no problem for you!
I didn't end up keeping the lasers on the hover. They're too far aft to be of good use in my opinion. Regardless, here's the original which you could easily just replace the top missile launchers with the lasers to try out for yourself.