Padding in <hr> tag wrong behavior in v5

Created by: berets76

Windows 10 Version 10.0.19043 Build 19043 Chrome Version 91.0.4472.114 (Official Build) (64-bit)

Code <hr class="m-0 p-1" />

in v4 render this

in v5, now I got this

No other changes were made to the code, only upgraded to v5