Some existing icons are not loaded about extension_builder

[nicodh]

What is the icon path in your instance?
Should be something like:
/typo3/sysext/core/Resources/Public/Icons/T3Icons/actions/actions-edit-delete.svg

[floen-de]

I have the same problems. (TYPO3 7.6 - ext:extension_builder: 7.6.18)
I use subdirectorys.
i.e.: domain.org/project/typo3/

For me relative Urls works:

-                         delButton.innerHTML = '<span class="icon-markup"><img src="/typo3/sysext/core/Resources/Public/Icons/T3Icons/actions/actions-edit-delete.svg" width="16" height="16"></span>';
+                         delButton.innerHTML = '<span class="icon-markup"><img src="./sysext/core/Resources/Public/Icons/T3Icons/actions/actions-edit-delete.svg" width="16" height="16"></span>';

[liayn]

I can confirm. The "new icons" commit 1deda45 is faulty. An extension must never make any assumptions about its location or URL location. It should use Core API here to generate correct URLs.

I suggest adding the base path to some data attribute and fetching this inside JS when building the path to the icons.

[liayn]

@nicodh IMO the commit only fixed this for 8 but not for 7, so this has to be reopened

[nicodh]

Yes you're right. Will backport it soon...