I've spent a considerable chunk of my weekend trying to resolve the "Sync Drawings" BUG a/k/a the ​inability to permanently remove previously deleted, magically reappearing​ ​chart ​drawings. As near as I can tell, the issue revolves around TOS Grids. In any event, I think I've found a solution that appears to have worked for me and thought I would post it for anyone whom might be experiencing the same or similar problem...

1) ​​Delete all ​created chart drawing sets and unwanted drawings
​2) Delete all created grids​
​3) Disable/Uncheck Sync Drawings option



4) Exit Thinkorswim
5) Delete the "usergui" folder


6) Restart Computer
​7) ​Launch Thinkorswim
​8) Re-enable/Check Sync Drawings option​

I hope this helps

UGH...That bug annoys me to no end.

I've done this to solve this issue:

Delete drawings from charts in question.
Once finished, go to Setup, Save workspace as...

Seems to have worked for me.