This moves the entire character sheet over against the left side of the screen so when I open the Chat, it doesn't cover any of the sheet so I can pin it open. My vertical monitor for tall things (like character sheets) is only ~1140px wide, and it's really nice to have the chat always pinned open, but it's annoying when it covers the sheet.
The feature as I expect it would be implemented would cause the sheet to shuffle as far left as necessary on the screen when pinning the chat to try and avoid covering the sheet with the pinned chat.
This feature is available in the wider layouts. You could zoom out a bit in the browser and see if you can get it to show without making the sheet too small. If just changing the margin is working I assume you're pretty close to that already.
I have a 2k monitor in portrait mode that I open my character sheet on, so it is 1440px wide (give or take). Unfortunately making it wider isn't really an option. Not without parts of the window going off screen which make using other tabs in that window difficult.
Yeah I assumed you'd have to zoom out. With that resolution it would probably be 90 or 80% on your browser for this option to appear. If that makes the text too small for you completely understand it's not useable for you.
You could look at alternatives that might be more permanent then having to type it in every time just for your own QoL. Like using the stylus extension and adding a line of css or using tampermonkey if you prefer js.
Every time I open D&D Beyond I paste the following into the browser console:
This moves the entire character sheet over against the left side of the screen so when I open the Chat, it doesn't cover any of the sheet so I can pin it open. My vertical monitor for tall things (like character sheets) is only ~1140px wide, and it's really nice to have the chat always pinned open, but it's annoying when it covers the sheet.
The feature as I expect it would be implemented would cause the sheet to shuffle as far left as necessary on the screen when pinning the chat to try and avoid covering the sheet with the pinned chat.
This feature is available in the wider layouts. You could zoom out a bit in the browser and see if you can get it to show without making the sheet too small. If just changing the margin is working I assume you're pretty close to that already.

I have a 2k monitor in portrait mode that I open my character sheet on, so it is 1440px wide (give or take). Unfortunately making it wider isn't really an option. Not without parts of the window going off screen which make using other tabs in that window difficult.
Yeah I assumed you'd have to zoom out. With that resolution it would probably be 90 or 80% on your browser for this option to appear. If that makes the text too small for you completely understand it's not useable for you.
You could look at alternatives that might be more permanent then having to type it in every time just for your own QoL. Like using the stylus extension and adding a line of css or using tampermonkey if you prefer js.