Thought I'd start a new thread for this. Apologies for referencing other forums, but the volume of posts regarding kangarooing in first gear with the 1.5TSI engine already used on other models is a little worrying, but worth a read - especially the later posts.
Arona 1.5TSI Evo:
https://www.honestjohn.co.uk/our-cars/seat-arona/hopping-mad-with-the-arona/
T-Roc 1.5TSI:
https://www.trocforums.co.uk/viewtopic.php?f=8&t=266&sid=2d31225b1987e82e99c14db5735999ce
Karoq 1.5TSI:
https://www.briskoda.net/forums/topic/446820-15-sel-first-gear-issue/
To summarise: It seems widely experienced, but some have it others don't. Dealers often simply say it's driving style that needs adjusting (especially for former diesel drivers). Some software updates seem to have been applied with variable success. Other more recent posts suggest it's more mechanical rather than software. Latest posts suggest the VW Group are aware of a problem, but no sign of a fix.
With the first 1.5 TSI Ateca now imminent, it'll be interesting to hear any early reports. Perhaps I'd have been better off with the old 1.4TSI engine as originally ordered…..