I have seen this happen once.
Not entirely sure of the circumstances (e.g. bad pack job or poor opening) but it appeared to be a similar issue with the slider getting caught in the c/d lines but not inducing a spin.
Not entirely sure of canopy or wingloading but the pilot kept it and didn't get the greatest flare out of the canopy and broke a leg and suffered some other injuries as a result.
I wouldn't anticipate the collapsible slider being a huge issue normally given that these appear to be standard on a lot of chutes and there have probably been a lot of jumps with only a small number of issues related to the slider.
I have seen more issues with freefly tubes etc caught in sliders/lines and causing problems for the pilot.
I'm not a rigger and only have 2 years in the sport and roughly 130 jumps. I haven't heard of this beng a significant issue but others may be able to provide more info.