When using tabs (with links in selected tabs) and file picker, the selected tab with link shows through the file picker. I've reproduced this in 2.6 in the Standard theme, another of our themes and the Canvas theme. I can't reproduce it in the Clean theme in 2.6, but that looks like it is because the renderer doesn't respect the tabobject's $linkedwhenselected property.

To reproduce:

• Clone the following repository into the local/tabtest directory - https://github.com/sam-moodle/moodle-local_tabtest
• Use either the Canvas theme or the standard theme if using Moodle 2.6.3
• Log in as an admin
• Navigate to <yourmoodsite>/local/tabtest/view.php
• Click the "Choose a file" button

Expected result: The select tab does not appear through the file picker
Actual result: The selected tab appears through the file picker