Build Id: Mozilla/5.0 (Windows; U; WindowsCE 5.2; en-US; rv:184.108.40.206pre) Gecko/20100222 Namoroka/3.6.2pre Fennec/1.1a1 and Mozilla/5.0 (X11; U; Linux armv6l; en-US; rv:1.9.3a2pre) Gecko/20100222 Namoroka/3.7a2pre Fennec/1.1a2pre Steps to Reproduce: 1. Slide open the tab sidebar 2. Open a new tab 3. Close the awesomebar and slide our the tab sidebar again 4. Use the stylus and press down on the tab close button on the newly created tab Actual Results: The button will blink before showing a pressed state Expected Results: The button should not blink before showing the pressed state
Sounds like on of the "changes in button image state doesn't redraw fast enough" bugs. We see it in the browser tools buttons as well. Try changing from preferences to addons to downloads. Chances are one of the changes will not redraw immediately.
This is a duplicate of bug 515514 and that one has more information.