Is this an UI bug?

[akmtshun]

The Android 14 has been successfully installed.  When Settings > System > Developer options > Smallest width is set to 600 dp or larger, the Xperia Home crashed and the 3 buttons navigation bar disappeared.  Will there be a fix for the issue(s)?  Thank you.

[HannahEd01]

Hey akmtshun, you shouldn't be tampering with all developer options BTW. But what's the model number of your phone? 

[akmtshun]

Xperia 1 V (XQ-DQ54). It's easier to navigate the Google Chrome browser after setting the smallest width to 600 or above (i.e. full-screen mode) -- it's easier to open a new tab and close/refresh a tab.

[HannahEd01]

Hey akmtshun, why do you have the need to use it? Is there an issue with your phone? 

Anyway, try these basic fixes: https://www.sony.co.uk/electronics/support/mobile-phones-tablets/articles/00232845