PBR itself only happens if there's PBR content. And no, you can't switch the rendering engine back to how Firestorm 6 behaved.
As for the boards, this does sound strange. Normally, the behaviour of such boards shouldn't change. But if you've got two boards with probably fully independently developed scripts underneath, and they both act up the same way, it sounds like we'll have quite a number of scripts to adapt and then an even larger number of scripted boards to update.
I mean, Firestorm 7 has only just been rolled out a few days ago. It hasn't been tested against everything in OpenSim yet. So we might be in for a few more surprises, and the Firestorm team might be in for a few more bug reports. But I hope this can be sorted out in-world.
I think I should travel around and check a few boards out there.
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