Frontend: Lovelace UI no longer displays width correctly on Firefox after 0.98.4 upgrade

[scstraus]

Home Assistant release with the issue:
0.98.4
Last working Home Assistant release (if known):
0.96.3
UI (States or Lovelace UI?):
Lovelace

Browser and Operating System:
Firefox 69.0 64-bit MacOS
Description of problem:
Lovelace now displays many of my tabs as wider than the browser window, with part hanging off the side of the window.. See below:

This is what it displays within the window:

But there's a bunch of cards hanging off the side with a different colored background:

config is here:

https://github.com/scstraus/home-assistant-config

The tab shown in the screenshot is this one:

https://github.com/scstraus/home-assistant-config/blob/master/lovelace/Tab1_Home.yaml

Javascript errors shown in the web inspector (if applicable):

Maybe this?

This site appears to use a scroll-linked positioning effect. This may not work well with asynchronous panning; see https://developer.mozilla.org/docs/Mozilla/Performance/ScrollLinkedEffects for further details and to join the discussion on related tools and features!

Additional information:
This doesn't occur on Chrome.

[iantrich]

Are you using any custom cards for layout? Sharing your config would be useful via hastebin or something

[scstraus]

Yes, but I tried disabling all of them on this tab and it didn't help..

Sorry, should have given you my config from the start, it's here:

https://github.com/scstraus/home-assistant-config

The tab shown in the screenshot is this one:

https://github.com/scstraus/home-assistant-config/blob/master/lovelace/Tab1_Home.yaml

[iantrich]

Is it just Firefox?

Edit: Missed your note on the bottom.

[scstraus]

Yep just Firefox. But same issue on 2 different macs so I can reproduce it. Confirmed working correctly on Chrome mac and Fully Kiosk on a Kindle Fire.

[hawkeye217]

Same issue here. Just switched to Firefox from Safari (since Apple killed the amazing uBlock Origin tracking plugin with their latest update) and this was the first thing I noticed when bringing up my HA dashboard.

[bramkragten]

Related https://github.com/home-assistant/home-assistant-polymer/issues/3725?

[scstraus]

Related #3725?

I have reverted back to 0.96.3 which still works fine for me, but will be happy to upgrade again to test a fix when it goes GA.

[bramkragten]

It will be in the next release 0.100, let me know if it is fixed!

[scstraus]

Ok will give it a go. Thanks. Wow 0.100, does that mean we have to get to .999 before version 1.0? ;-)

[bramkragten]

Could you let me know if this is fixed?

[scstraus]

Traveling this week. Will try to get to it next week.

[scstraus]

Hey, so I upgraded to .100.2 and it looks like everything is back to normal. Thanks!!