[BUG] RadioItems / Checklist does not display vertically as documented without stylesheet

[wf-r]

Describe your context
Python 3.8.6, Windows 10

• replace the result of pip list | grep dash below

dash                      2.4.0
dash-core-components      2.0.0
dash-html-components      2.0.0
dash-table                5.0.0
plotly                    5.8.0

• if frontend related, tell us your Browser, Version and OS

  • OS: Windows 10
  • Browser Firefox 100.0

Describe the bug

In contrast to the documentation and the minimal examples provided there, the default behaviour of RadioItems and Checklist is a horizontal display of the options (https://dash.plotly.com/dash-core-components/checklist and https://dash.plotly.com/dash-core-components/radioitems describe the vertical display to be the default case). According to https://stackoverflow.com/questions/62137479/plotly-dash-dcc-radioitems-vertical-alignment a vertical behaviour is achieved using the stylesheet, yet the minimal examples given in the documentation do not incorporate this stylesheet.

Additionally, a new switch to change to horizontal behaviour has been added (inline=True). It would be great to either have a corresponding switch for vertical behaviour in case no stylesheet is used, or otherwise at least mention the stylesheet in the documentation.

Expected behavior

Display should follow minimal example code given in documentation.