This is the first report of this kind and we are not aware of a change that might be causing this behavior. I also tried this build in the live demos example with the RadToolTip and things were working fine for me.
In order to pinpoint the reason for this I would need some further information on your setup:
- does this issue occur with the same page, but only this version of the RadControls (i.e. is is present in the official Q2 2011 SP1 release or were you working with an older version before)?
- do you have the AjaxControlToolKit assembly in your Bin folder - if so please remove it for test and let me know if this helps
- Have you set all the needed properties for the tooltipmanager - RelativeTo, Position, Width, Height, ShowEvent, HideEvent?
- have you added some global CSS rule that may be affecting the tooltips (for example for elements like tr, td, ul, li)?
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