This sounds more like a mod specific bug, I suggest reporting it to the mod team.
Current Version: 184.108.40.2067 Latest Release Date: 2020-09-17 Current TeamSpeak 3 Support: 3.5.3 ACRE2The Advanced Combat Radio Environment Introduction ACRE2 is a full fledged communications suite for Arma, allowing realistic radio and voice communications through Teamspeak 3. The original ACRE re...forums.bohemia.net
Yep looks like a known issue with dedicated servers they're actively working on
Mods (complete and add to the following information): Arma 3: 2.00 Stable CBA: 3.15.1 Steam workshop ACRE2: 2.8.0 Steam workshop ACE: 3.13.4 Steam workshop Make sure to reproduce the issue with onl...