in 1.14, armorstands with the marker:1b tag didn't glow, but whatever item they held/wore would glow, and this was important in model making of "custom mobs".
now in 1.15 neither the armorstand nor the model would glow, and if it is set back to marker:0b, both the armor stand and the model glow.
the model is placed in the armorstand's head slot.
1.14.4 picture is how the model glow is supposed to be
1.15 p1 picture is with armorstand marker:1b
1.15 p2 picture is with armorstand marker:0b
Thank you for your report!
We're actually already tracking this issue in MC-167220, so I resolved and linked this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature in the future to see if the issue has already been reported.
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