After using 'Ctrl Up' (holding Control and pressing Arrow Up), that we use in Bridge to go a level higher in tree folders, I am anable to use 'Shift Left / Right' (holding Shift key and pressing Left or Right Arrow) that adds to currently selected file / folder thumbnail (in Content panel) another thumbnail that's on left / right side.

Normally using 'Shift key with left/right Arrow' to add one or more thumbnails to current selection works with no problem. It stops working only in this one case.

The workaround I found is either pressing F5 (refresh) or using some Arrow Key (that wouldn't change current selection) after using Ctrl with Up. Only then 'Shift with left / right Arrow' works again.

This problem existed in previous CC (prior 10.0.4.157) releases too, back to CS5 and CS6, and probably CS2, however that last one I can't remember for sure.

Please fix this bug as it is very convinient to use CTRL and ARROWS to change location to higher and then selecting thumbnails with SHIFT and ARROWS within 'Content' panel, than doing these operations with mouse only.

Ps. in (optional) categories, during composing this post there was no Content panel to select, though all others available in Bridge were on the list.