It is so hard to believe that when more than 1000 employees at my employers are also using at least one dock (Dell and Thinkpad both) and using them very well.
Only around 2024-ish the situation with USB and TB docks seemed to stabilize.
Thanks for finally answering this mystery for me.
That thing Didn't Work more than it Worked, but options were slim. Eventually it fully died about 14 months in. I didn't even bother checking to see what the warranty terms were. TS3 Plus, back in 17 or 18. What a piece of shit.
Sounds like it's a good thing I didn't bother trying again in the early 2020s and only recently bought a new dock.
Docks were bad, bad products in those days. They were no longer the dedicated bulky-but-reliable things of years past, or the modern finally-debugged dongles we've got now.
This was Intel's Alpine Ridge and it was hell. (At least, I think that was the one. Certainly, it was hell!)
The old bulky-but-reliable things often enough didn't contain much electronics - it was often enough the raw interfaces exposed directly on these multi-pin connectors. Simple, stupid and reliable as long as no electrically conductive dirt was around.
Today I swap the power brick on my Dell thunderbolt dock when it acts up. Given the hours of use and how many times it's been plugged/unplugged from various laptops/etc (it worked great off an AMD desktop PC with thunderbolt on the rear I/O), I think my employer should buy me a knew one out of respect.
We had those early "blessed by Apple" USB-C LG monitors. Garbage when it came to connectivity. Same with docks and the like.
We're now 9 years later so... I think it's all better now than before.