This CBC article indicates there were issues with the Vegas ice in the finals
I recall bad ice being an issue at some point in every finals I've watched over the past 25 years. There were definitely issues in St. Pete during the 2015 finals. It's a league-wide issue that gets worse the further south you go.
The Golden Knights' run to the Stanley Cup Final means hockey played in the sizzling Las Vegas summer. The heat contributed to poor ice conditions at T-Mobile Arena in Game 1, and Game 2 is expected to be the same. The rough ice likely contributed to the chaotic nature of Vegas' series-opening victory. But players on both teams say it's nothing they can't handle.