From OTRS: https://ticket.wikimedia.org/otrs/index.pl?Action=AgentTicketZoom;TicketID=11174388
Search for turbo in the French wiki and open the turbocompresseur page.
I guess the issue is with the gif thumbnail in the related articles (savoir plus Aka learn more) section. Gif for the moteur a deux temps article.
Reprod:
App version r/2.7.50282-r-2019-05-24
One plus 6t running Android 9