Describe the bug

I turned off all but one of the PVs, but still saw more than one line
Expected behavior
only draw data for PVs that are "on"
Steps to Reproduce
I searched for WATR:*:TANK_LV, chose 6 in the middle, plotted, turned off all but one and still saw many lines
Possible solution (optional)
No response
My platform
no machine -> physics@lcls-srv01 -> typed trace at prompt
Additional context
No response