I also have a bootlid problem on my '17 superb 3 estate. It began with not locking when closing, it just kept 'whirring', so when closing I would give it a 'helping' push down, when it was almost closed. Sometimes it would work ok, so was intermittent. Than the remote on the key fob, & the button on the console stopped working, all I get is a faint click. Now when opening & closing, it sometimes stops in a random position, & I have to press the button again. Sometimes when closing, its really slow, & stops halfway, & pressing the button it closses fast with some force! Sometimes I get beeps, but sometimes none.
I'm not sure if this is a wiring or programing problem, but I've booked it in with my local garage for an obd to see if any codes come up.