Yes, mostly italians and austrians

https://svet24.si/novice/slovenija/gorivo-dizel-bencinski-se...

https://sobotainfo.com/novica/lokalno/foto-video-neverjetna-...

https://sobotainfo.com/novica/globalno/video-avstrijci-k-nam...

https://www.prlekija-on.net/lokalno/40253/ponekod-zmanjkalo-...

And it's not the first time:

https://vecer.com/slovenija/izredne-razmere-zaradi-navala-na...