Behavior and Features LS5 will not Support
Items marked "(Closed)" have been considered and re-considered and can not or will not be supported in LS5.
Also see: Why You Will Love LS5 and LS5 Known Issues.
(Closed) Snapshot New and Snapshot Top Blocks
Use Flowblock instead.
(Closed) Half-Width Tab Blocks
Use Flowblock in your tab blocks instead.
(Closed) Radio button with Rollup Field Display Style
No. Just no. Pick dropdown or radio buttons.
(Closed) User Preference for Interface Font Size
Browser zoom is the better way to do this, and for bonus points is the Accessible way to do this.
Right of Last Field Display
This configuration option for fields will not be supported in LS5.
Long Navigation Bar Labels
Long tab labels on the main navigation bar will be truncated.
Long Actions Menu Labels
Long Actions menu labels will be truncated.
Fields with No Value will display as Blank instead of "N/A"
For example, if the field "Likes Unicorns" is on a profile page but hasn't been answered, LS4 would display "Likes Unicorns N/A".
Actions Menu Icons Require a Click
The Actions menus in LS5 (typically a Rocket icon 🚀) do not display when you hover your cursor over them like in LS4.
Side Bar Links
The side bar is not supported in LS5. Links and other elements will need to be moved to the Actions menu or a Flowblock. Side bar links on static forms that administrators cannot control will be moved to the Actions menu or something like a Quick Actions list of links/buttons at the top of the static form.
User Preference for Number of Results to Show in Lists
LS5 will not honor this preference.