Not really, Russia's previous aggressions in 2014 are the reason Ukraine even has a military in the first place and from the past few days it appears that said military's existence came as a shock to the invader. It is fair to say that Putin expected another special operation like in Chechenya, Syria, etc., where he would just bomb the terrorists for a while with no actual opposition showing up. There's a decent analysis thread outlining the background and doing a lot of historical legwork. [0]

This is a real problem and a cause for worry though since insane escalation may very well occur with the singular goal of saving faces of russian heads of state.

[0] https://twitter.com/kamilkazani/status/1497993363076915204