I did a shop search for a "Experiment Beanbag" and it says that there are some in the Trade Center.

When I click the link I get this message:

No results: "Experiment (Experiment Stocking)" in "item search"

Did you mean? Experiment Plushie, Experiment Beanbag, Experiment Stocking, Experiment Stocking, [45 more]

But if I type in the item name in full (not using the shop search link) it works just fine.

Win7, latest version of Chrome.

Not sure if this is related or not but clicking the top links (new trade, my trades, etc) leaves the trades area completely blank. are they now broken on top of everything else?