I already answered your other thread and for others who might encounter the same problem I pasted it below:
I apologize for not being clear enough. Note, however, that one of the main purposes [among others] of RadToolTip is to be used as a replacement of the "standard browser tooltip". This is the reason that the tooltip, as its highest priority reads the title or alt attribute of the element (as it is the title/alt attribute that causes a browser tooltip to be displayed).
As a result, in fact there are 4 ways to display content in a tooltip - by reading its TargetControl's title attribute, by setting the RadToolTip's Text property, or by writing HTML between the RadToolTip opening and closing tags.
Here is the correct priority for the three approaches to setting the RadToolTip content:
1. RadToolTip Text property
2. [target control] title attribute / ToolTip server property
3. alt attribute/AlternateText server property
4. RadToolTip content between opening/closing tags
Since the tooltip manager used to work like above explained from its creation when autotooltipify is used, we got customers` requests to make this behavior consistent and the same for the separate RadToolTip as well as already explained.
This being said what I suggest is to remove the Alt /as it was actually removed with the previous version by the manager/ or use the solution I already provided in your forum thread.
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