Panel crash if having a "gap" in 4/8/12 slots on entities page #294

Describe the bug
Having a room with an 8 entity page and use placeholder 1-6 and 8 (not using 7) makes panel reboot when trying to use button 8. Same thing happens on 12 page as well. As long as you use every slot in order and not have gaps its not a problem from what ive tried. Having gaps makes things weird. If you use slo 7-12 on a 12 entity page leaving slot 1-6 empty some buttons work but they take you to the wrong light. Needs checking out.