Navigation animations are off unless you turn them on

Workspace pages no longer slide by default. You can turn the left-right animation on in Appearance or override it in your profile.

Moving between screens is instant by default. The left-right page slide is now a setting, not a fixed behavior.

Turn it on for the whole workspace under Administration → Workspace Settings → Appearance. In My Profile → Account, you can use the workspace default, set it to Enabled, or set it to Disabled for yourself.