The Bug:
Checkboxes don't get highlighted when the cursor hovers over them, But do when tab is pressed to highlight them. Which is inconsistent with other buttons.
Reproduce:
Go to a menu with a checkbox (multiplayer warning or optimize world)
Press tab to select the checkbox
→ ✔ The checkbox was highlightedPress tab again to select a different button
Hover your mouse over the checkbox
→ ❌ The checkbox was not highlighted
Observed Result:
The checkbox was not highlighted
Expected Result:
The checkbox would be highlighted
Can confirm in 1.18 pre release 1