[8193.20.1] SetTextureOverride failing when changing icon textures

[weavejester]

To Reproduce

• Add a feat, skill or spell to the quickbar, for example the search skill.
• Use SetTextureOverride to override its icon texture, for example changing isk_search to isk_settrap.
• The icon won't change unless the quickbar slot is cleared and then re-added.
• If the user logs out of the server and logs back in without exiting the client, the icon won't change even if the quickbar slot is cycled.

Specifics

• OS: Windows 10
• Game build: 8193.13 to 8193.20.1
• Distro platform: Steam

Bug Description

It seems that the icon textures are cached, and that cache is not cleared when SetTextureOverride is used.

Changing icons is useful to denote cooldowns, ongoing effects, or other special circumstances.

[burmashave]

Would love to get this fixed for the all the same reasons mentioned by @weavejester!