Brave browser size is bugging out when Developer Mode is enabled

Brave Browser bug I am experiencing.

Link to YouTube video of bug.

I have been using Brave Developer Mode here recently and whenever I click to adjust the width of the browser, it bugs out and minimizes very small.

I have attached a YouTube video of it because I am a new user and new users cannot upload videos.

This ONLY happens when Developer Mode is enabled. I have tested this without Dev Mode on and it works fine.

Brave Version( check About Brave):

Version 1.69.162 Chromium: 128.0.6613.120 (Official Build) unknown (64-bit)
(https://brave.com/latest/)

can you test the same in chrome?

i dont have Chrome. I can download it. I just tried FireFox and it doesnt do it.