If a Unity client (Verified on iOS, IL2CPP, 2021.3 LTS) is subject to a network change; such as moving from WiFi to Cell, or Cell to WiFi, where the original connection is terminated; Bugsplat will be unable to post exceptions until the original network connection is restored.
This bug appears to be caused within BugSplatDotNetStandard.dll which is not distributed in an uncompiled form.
Attached is a sample exception which'll happen when the original network connection is out (however there is still a valid connection, on another network adapter).
SampleBugsplat.txt