Inconsistencies between widgets on Issues page

Problem

The widgets on the issues page suffer under at least the following inconsistencies:

Styling

Description	OKRs	Tasks	Linked Items	Related merge requests	Related feature flags
Screenshot
Header/Body background	White/Gray	White/Gray	White/Gray	White/Gray	Gray/White
Header size	49px	49px	50.18px	45px	49.8px
Anchor	No anchor	No anchor	No anchor
Spacing	No icon or number
Headline	h5	h5	h3	h3	h3
Headline with or without icon and number	No icon or number
Multi-item lists
Can be collapsed	Yes	Yes	Yes	No	No
Text color of number in header	No number	#737278	#737278	#737278	#333238

Content

I left out "Related feature flags", because it does not contain most of the meta data.

Meta data	OKRs	Tasks	Linked items	Related merge requests
Title	✅	✅	✅	✅
ID	❌	❌	✅	✅
Milestone	Does not exist	✅	✅	✅
Weight	Does not exist	❌	✅	Does not exist
Due date	❌	❌	✅	✅
Assignees
Labels	✅	✅	❌	❌
Remove				Does not exist