Internet Explorer 9: Large Blue Bar in Gmail

Immediately after updating Internet Explorer to version 9, I noticed a pretty severe bug within Gmail. A huge blue bar appeared, forcing all the buttons to appear on individual lines. Furthermore, despite the fact that I had one e-mail in the inbox, the graphical issues may it impossible to see. With the problem only existing in IE9, and not in my other browsers, I began searching for a solution.

A giant blue bar can be seen obstructing the Gmail interface.

Solution

A Gmail Help article revealed that the problem originated from my Compatibility View settings:

Internet Explorer has a Compatibility View, a feature that affects how some websites are displayed. If Compatibility View is enabled for google.com, it may cause some Gmail features to display incorrectly. So, we suggest that you remove google.com from your list of sites that have Compatibility View enabled to ensure that Gmail displays correctly. To do this, follow the steps below:

  1. Right-click on the gear icon in the upper right hand corner.
  2. Select Command bar.
  3. Open the Tools menu near the top of your browser and select Compatibility View Settings.
  4. Select ‘google.com’ under ‘Websites you’ve added to Compatibility View’.
  5. Click Remove.

Source

Gmail Help – Using Internet Explorer with Compatibility View enabled