Hi Jim,
Greetings from Syncfusion Support.
We have checked with your reported query related to “MouseTrail property not working for Tooltip”.
We have created a sample by enabling MouseTrail and had checked by opening the Tooltip on a button click. We haven’t faced any issues. On a side note, we would like to mention that, if you require the target of the Tooltip to vary, this can be done by rendering another Tooltip with the different Target property required.
Refer to the sample below.
Please get back to us if you need any further assistance.
Regards,
Sharon Sanchez S.