when I, e. g. press enter on a file (at the moment an icon file on the left panel), the associated application opens with the file (at the moment IconFX 1.6), when then I switch back with ALT+TAB to TC 8 or minimize IconFX AND the cursor is above the right panel, the file beneath the mouse cursor will be highlighted at once (the TC cursor switches to this file).
EDIT: If the mouse cursor is over a tab TC switches/activates automatically to this tab.
BTW, same behavior is at TC 7.56a.

Hinting greetings
Reiner