I've had a vague feeling about this for a while, but this is the first time I've caught it happening for sure, so I played around with it a bit. Turns out that in any sorted list of items, whichever items should be in the very last row don't display at all. If you reverse the sort, they come back at the top of the list, but some items are dropped from the end again. Happens in the 'Modify Party' screen within a module consistently (with or without filters). Haven't tried it in Keep yet to see if it matters. [Edit: <sigh> Next time, I'll search more than the first page... http://forums.cardhunter.com/threads/bug-inventory-display-cutoff.6689/ Carry on...]
