Hovering the like button on a post shift the like number

[R3laxAti0n]

Hello, I was consulting a public post on the BDX Town instance and I discovered that hovering over the like button make the like number shift a bit.
Screen for better comprehension :
Without hover
With hover

I was on Vivaldi (latest update at the time - 6.6.3271.53).

I'm not sure it's expected behavior so I raised this issue.