Since 1.19 the hit box on boats appears to be too large. For example, I used to be able to place a boat on a button covered packed ice nether highway by targeting anywhere on to of the ice and placing the boat. Now the boat will only place if I remove a button. Even then it will launch forward three or four blocks instead of staying put like it used to.

Steps to replicate:

1) Place down a row of ice.

2) Put buttons on top of ice.

3) Place a line of fence posts even with the top of the row of ice on either side.

4) Attempt to place boat on button covered ice.