Team prefixes and suffixes are duplicated in the sidebar if displayautoupdate is enabled

The bug

If the objective currently in the sidebar has displayautoupdate enabled, then players will have their prefix/suffix displayed twice before/after their name in the sidebar.

How to reproduce

1. /team add team

2. /team modify team prefix "[Prefix] "

3. /team join team

4. /scoreboard objectives add score dummy

5. /scoreboard objectives modify score displayautoupdate true

6. /scoreboard objectives setdisplay sidebar score

7. /scoreboard players set @s score 1

Observed result (sidebar)

[Prefix] [Prefix] <playername>

Expected result (sidebar)

[Prefix] <playername>