Bug 356064

When using a non Breeze icon theme, Oxygen or Adwaita for example, there are a mix of the selected theme icons and Breeze icons; as shown in attached screenshot of the Application Menu. Although it is not restricted to that, I'm also seeing the effect in, for example Dolphin, where a lot of the mime type icons are the Breeze variants.

Reproducible: Always

Steps to Reproduce:
1. Use "System Settings -> Icons -> Theme" to select and apply a non Breeze Theme.
2.
3.

Actual Results:  
The selected theme displays part Breeze icons.

Expected Results:  
The selected theme does not display Breeze icons.

System Settings:
Version 5.4.3
KDE Frameworks 5.16.0
Qt 5.5.1 (built against 5.5.1)

OS:
Tumbleweed snapshot 20151124 
note: this snapshot contained the kde-frameworks version update 5.15.0 -> 5.16.0


The Icons set I normally use is "Oxygen Ionised" (user theme located at ~/.local/share/icons)

This is not restricted to that Icon set, "Oxygen" and "Adwaita" also exhibit this behaviour.

It is not caused by missing Icons from the "Oxygen Ionised", "Oxygen" or "Adwaita" themes. Also, in the case of "Oxygen" variants the theme inherits "hicolor", not "Breeze".

It is not a cache issue. Deleting "icon-cache.kcache" (from a VT whilst not logged in to KDE), does not "solve" the problem.

It is not unique to a single user. Creating a new user (which initially has the default "Breeze" icon theme) and changing to "Oxygen" or "Adwaita" exhibits the same "mixed" theme.

Prior to the kde-frameworks version update 5.15.0 -> 5.16.0 this problem did not exist.