The icon of a preconfigured LTI tool is missing from the activity chooser. The default puzzle icon is shown instead.

To reproduce:

1. Login as admin.
2. Go to /mod/lti/toolconfigure.php
3. Click on configure a tool manually
4. Configure a tool. I'm using BBB as an example:

URL: http://test-install.blindsidenetworks.com/lti/tool

Key: bbb

Secret: b00be971feb0726fa697671c9cf2e883

Icon URL: http://test-install.blindsidenetworks.com/lti/images/icon.ico

5. Make sure "Tool configuration usage" is set to "Show in activity chooser and as a preconfigured tool"

6. Login as teacher

7. Click on "Add an activity or resource" in a course.

The teacher should see the BBB icon in the activity chooser next to the tool name. Instead the default puzzle icon is shown.

The icon is also missing from the edit activity page.

The correct icon does show in other places:

• The course page (after creating an activity instance).
• The tools list in the admin toolconfigure.php page.

There is related issue but it has broader scope and some of it was fixed:

https://tracker.moodle.org/browse/MDL-45105