Global system messages not working sometimes

[WindDemon21]

At as far as I can tell completely random times, the system messages randomly don't work, specifically noticing this when i try to get someones global name. Either by clicking on their name and choosing the option, or by right after trying /getglobalname, i'll try both, but no system message with their handle ever pops up. 20 mintues later, it will work, 20 more minutes later, it doesn't work. Not sure what's going on but it's there.