Bug - car setup is messed up

Since the 0.34 update, setting up a car got very cumbersome:

• Several setup values are getting shown rounded to 50, whereas previously, they were'nt rounded. You still can enter more specific values than rounded by 50, but they're not being displayed accurately. If you need proof, add a actual car weight widget and change the tire weights or fuel load.
• The Apply button in the Setup tab is unreliable. The only reliable way to have the changes getting applied is by enabling live update.
• I can't change tire pressure anymore. Whether or not live updates are enabled, it won't change anything. Interestingly, the tire pressures of my car were set to 20 psi, but since the update, the pressure's shown as 20.1 psi. To reproduce the issue, try changing the pressure to 1 psi and look at the tire after applying the change. It's not getting deflated as it should, therefore it's not applying the change.
• Text / number fields are messed up. For example, try to manually enter a specific engine redline RPM. Click in the text field, press CTRL+A and start writing the number. It's completely messed up
• In the Parts tab, we previously were able to not only search by the part name (like Differential), but also by the actual parts (like "race adjustable differential" or similiar.

I think I'll take a break for a month. Or is there a way to restore the previous browser framework?