TP cancelling by trade?

I know tp-cancels are mostly just innocent pranks for the people doing it, especially if it's the first time they do it to you specifically, it might not be as small a deal for the person having it be done unto.

After a few hundreds of TP-cancels from hunts, market places, gold saucer or wherever there are a lot of people gathering it gets old. Running around in /busy status makes it impossible for friends to reach me in case they want to send /tells since not everyone prefers public channels like the LS or FC chat.

I could make a macro for /busy everytime I tp and go around it in many other ways but to be fair, I never understood the design logic behind leaving control of your character to other people in that way. Are there any plans to ever fix this?

I thought this was fixed with 3.4

It was fixed in 3.4

Then how come I am still being interrupted by it...?

I think there is still a small (1-2s) time frame to trade-lock someone teleporting.
You just have to promt the request right after the cast bar of the teleport finished.

Thank you so much for clarifying this, Neophyte.

Now I'm just wondering if SE will do something about this instead.