High Sierra broke external dual display output on Belkin docks

In my organization we have about 12 or so users running new Macbook Pro's with Belkin Thunderbolt 3 Express docks. Purchased these through the Apple Store as believe they are the official recommended dock to use with new Macbooks (?). They worked fine before but it seems a recent High Sierra update, perhaps the latest .4 release, broke the Thunderbolt drivers somehow .

Would guess it's a dumb DRM / thunderbolt 3 security thing... the Apple store docks 'should' be recognized correctly, shouldn't they?

Issue:

Now the docks are not recognized correctly in the devices page. While most components work, the second display no longer works. Most of the users are using two 4k displays at 60HZ which these are certified for but simply these does do not work anymore, no output now, was wondering if this is a known issue and if any fix or repair ETA is available.

I imagine it'll take a long time so ordered in new docks and usb C/ thunderbolt 3 to hdmi adapters in the meantime. Very disappointed though as these are official docks so the compatibility should be assured (would guess), and not to mention they were about 500 bucks or so now have about $6000 worth of docks that no longer work.

The dock:

https://www.apple.com/ca/shop/product/HKQ12VC/A/belkin-thunderbolt-3-express-doc k-hd

I guess there is a reason they are rated one star in the reviews... disappointing when updates break stuff that used to work.