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KUMAR D 45KUMAR D 45 

Is there any character limit for hover over in a tab. Are there any limitations for hover over?

Raj VakatiRaj Vakati
There are some limitation 
 
  1. You can select all of the available fields and up to five related lists to display in the console; however, it is recommended that you only select a few so that users do not have to scroll to find information.
  2. Selected fields and related lists display in the console even when they do not contain content.

  3. Fields marked Always Displayed or Always on Layout on page layouts are automatically included on the mini page layout and cannot be removed unless they are removed from the page layout.

  4. Field properties on the page layout determine field properties on the mini page layout. For example, if a field is read-only on the page layout, that same field will be read-only on the mini page layout. To change the field properties of fields on the mini page layout, you must change the field properties of fields on the page layout.Note that the console respects field-level security in organizations where it is available.
  5.  can’t define mini page layouts for the Close Case Layout or the Log a Case Page and View Cases Page layouts on the Self-Service Portal.
    You can define mini page layouts for the user object; however, you cannot add standard fields or related lists. Also, a customized mini page layout won’t display in the Agent console.
     

https://help.salesforce.com/articleView?id=console_definelayouts.htm&type=0