Arma 3’s new Warlords mode isn’t battle royale, but it IS an attempt to create a big multiplayer experience that sends players straight into the action. As far as I can tell after spending some time with it this weekend, the results are mixed. If it's a script, it's most likely a rarer or hard to find bug within the script itself, and you need to get in touch with the mission creator or server admin. Try to throw grenades, change weapons, or reload while you're down. If you can't do these things and can't access the escape menu to respawn, then it is a script.
Bohemia Interactive has released a brand new update for Arma 3 that fixes a variety of issues but also improves the latest mod in the game, Warlords. Visual.
Arma 3 Respawn Script
Added: Unique Virtual Garage icons to Mk41 VLS / Mk45 Hammer. Changed: MH-9 no longer has a crosshair. A new section was added: aimingdot. Scripting. Added: and commands now accept a -1 radius for forced position. Fixed: would not return NOTHINGGeneral. Fixed: The game could freeze on startup with the file system thread turned off (e.g.exThreads=6).
Fixed: Some achievements couldn’t be completed (Model Student, Puppeteer, Dressing Doll, Get Arrested, Punch Out). Fixed: Proxies were not considered for object actions, only the parent object. Fixed: Removed compile caching that was responsible for memory issues LAUNCHER. Changed: Vanguard game type is no longer highlighted. Fixed: Localization typos.
Fixed: -malloc parameter tooltip SERVER. Updated: Stand-alone Windows Dedicated Server (1.90). Updated: Stand-alone Linux Dedicated Server (1.90). Known issue: Steam client modifies the steamappid.txt file incorrectly. In case of issues, verify its content is: 107410. Known issue: Sometimes the add-ons are loaded from the wrong installation (e.g. Main game).
Try adding -mod=curator;kart;heli;mark;expansion;jets;argo;orange;tacops;tank;dlcbundle;dlcbundle2 to your arma3server.exe shortcut.