I noticed this while watching the DAC games and went back to the replays to check. So it happened during both live and in the replays.

When a casters camera control is selected some ward icons, rune icons, and neutral camp icons (this may be intended?) do not appear on the mini map. Selecting free camera shows all the wards and runes properly, but obviously isn't the best solution for watching games. When viewing from a casters camera, if a player or a ward gives vision of one of the hidden wards or runes, the icons will appear as normal on the minimap.

Here's some example images from the DAC replays.

Free camera ward example - Ward is visible in free camera on minimap.
Caster camera ward example - Ward is not visible on the minimap.

Free camera rune example - Rune is visible in free camera on minimap.
Caster camera rune example - Rune is not visible on the minimap in caster camera because it is out of player vision.

You can also easily see the neutral camps not displaying when comparing any of those caster camera views to the free camera views.

My full system info can be found here https://gist.github.com/ramma/8dc867b11b44917debfc.