copper golem doesn't update comparators in certain cases

copper golems don’t update comparators if they place an item in a double chest and the comparator output is taken from the unchanged half of the chest

steps:
1. place a double chest
2. take comparator output from the both sides of the chest without the comparators touching
4. make the golem place an item in the chest

expected behaviour:
both comparators should update

actual behaviour:
only one of them does, seems to be dependant on which half the item was placed in

after more testing, this issue also appears when the golems take items from a double copper chest (same setup)