Armour stands can be broken with a sword in creative mode
Armour stands display the light glitch when within on block of an frame with an item in it (above as well), providing the item was placed after the stand
The above statement is not true if the armour stand is on an angle
Armour stands can glitch through half slabs, (it only occurred for me when the light glitch was visible)
Please put only one bug report in each ticket. It is very difficult to keep track of bugs when they are not in their own tickets, and it is easier for you to make multiple tickets than for the mods to separate them.
But: All of your bugs were already reported.