Steps to reproduce:
1.Open a page in VE
2.Go to Insert>Transclusion
3.Search for a template like Cite Web
4.Click on "Add template"
5.When all the parameters appear, insert a value in one of the parameters then press tab to go to the next parameter.
Observed Result:
Pressing tab does take user to the next tab
Test Environment: http://en.wikipedia.beta.wmflabs.org/
Browser: Chrome Version 26.0.1410.65
OS: MAC OS X 10. 8. 5
Page:http://en.wikipedia.beta.wmflabs.org/wiki/New_deep?veaction=edit
Version: unspecified
Severity: normal