Created attachment 8471037 [details] strange horizontal lines after highlighting the elements (middle and right) I'm seeing strange horizontal lines in my account/folder list (sidebar on the left) which are visible in the attached screenshot: - left: directly after Thunderbird start background has homogeneous color - middle: after moving selection over the entries one time (e.g. moving mouse over them or scrolling through via keyboard there appear strange bright horizontal lines between the entries. - right: when quickly moving the mouse over the entries some but not all show the issue,
P.S.: - This started in Firefox 31.0. With Firefox 24.7.0 everything was fine. - OS is Windows 7 (Aero on); I don't know if other systems are affected.
Status: UNCONFIRMED → RESOLVED
Last Resolved: 4 years ago
Resolution: --- → DUPLICATE
Duplicate of bug: 909820
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