Cherry-pick from ChatTwo upstream f35b7d3 (Infiziert90, 2026-05-12).
Tab.Clone() used to assign CurrentChannel = CurrentChannel and run
TellTarget.From(TellTarget). The first was a plain reference copy of
the UsedChannel — the clone and the source shared the same channel
state, so a channel switch or TellTarget update on a PopOut/Temp tab
also mutated its origin tab. The second was a static factory call
that read like a constructor where every other place uses Clone().
- TellTarget: static From(t) replaced by instance Clone(); only
call-site swapped to TellTarget.Clone().
- UsedChannel: new Clone() that copies the scalar fields and runs
Clone() on the two TellTarget references (null-safe).
- Tab.Clone(): CurrentChannel goes through UsedChannel.Clone().
JonKazama-Hellion
f8b5c14509