TM Merge pop-up closes on second mouse click.

Steps to Reproduce:

• Login to zanata.

• Go to dashboard.

• Select project.

• Select Version.

• Click on ... on top right corner.

• Click on TM Merge Translation option.

• Once TM Merge pop-up opens you will see three checkbox on the start/top.

• Select any of the checkbox.

• Try to check another checkbox/click anywhere in pop-up

• Observe the behavior

Expected Result

• Pop-up should not be closed on second time mouse click

Actual Result:

• Pop-up closed automatically on second time mouse click/second checkbox check.