The bug
/scoreboard objectives add <objective> <criteria> <displayName> or /scoreboard objectives modify <objective> displayname <displayName> does not resolve <displayName>.
Steps to reproduce
summon minecraft:armor_stand ~ ~ ~ {UUIDMost: 0L, UUIDLeast: 0L, CustomName: '"MC-164039"'}scoreboard objectives add _ dummy {"nbt": "CustomName", "entity": "0-0-0-0-0", "interpret": true}❌ Created new objective [] (expected: Created new objective [[MC-164039]])
scoreboard objectives modify _ displayname ""scoreboard objectives modify _ displayname {"nbt": "CustomName", "entity": "0-0-0-0-0", "interpret": true}❌ Changed objective _ display name to [] (expected: Changed objective _ display name to [[MC-164039]])
Also affects team display names, prefixes, and suffixes. Does not affect bossbar display names.