@Aircoookie
short issue message:
The WLED Broadcast Input Field is a bit to small.
See 1st screenshot
Setup: PC, Chrome latest with default settings, full screen and small screen (half screen size)
WLED version: See 2nd screenshot
I hope you can fix it 
What device is this rendered on? Are there any system or display related properties that increase the size of text? For example, in iOS, there are accessibility options (for extremely well sighted as well as those with aging or just plain bad eyesight) that may affect this if the selected font is not one allowed to automatically adjust the field size to hold the data.
Possibly, even likely though, you selected a 5-digit UDP port where @Aircookie used a 4-digit UDP port during development.
It is too small for me too. 21324 is also the default port. Not sure why I never noticed it… will increase the width slightly!
Is there html / js / css magic that automatically formats the field width to at least hold the default value? Or, does that simply add more size to the code?
Quick find/fix though! Thanks. 
The screen settings are 100% default. tested now on two machines. Downloaded the latest dev again, compiled it and same outcome.
It is done on a Lenovo T540 Laptop with max hardware (processor, memory, ssd.). Three monitor types tested. DVI, VGA and Lenovo Display Port.
Fixed in master just now!
So tomorrow morning another compile with my settings ;-).
Thank You @Aircoookie