Tab cannot go from combobox to combobox

Original Reporter info from Mantis: Alextp

• Reporter name: CudaText man

Description:

attached demo.
in demo, test tabOrder. on Linux gtk2, tab - after 1st combo goes to 1st control. must: go to 2nd combo.

Mantis conversion info:

• Mantis ID: 32458
• OS: ubuntu
• Platform: Linux gtk2 x64
• Version: 1.9 (SVN)
• Fixed in version: 1.9 (SVN)
• Fixed in revision: 55920 (#c5e11a9e), 55979 (#058c0d8e)