We have various test and editor-only assets in our project, which I would like to exclude from the "Select Texture" window for example. It seems Unity displays all textures found in the project in its Select Texture window. Even textures we use for Gizmo's for example, which are located in an Editor folder. This causes issues every now and then, when someone assigns an asset that is meant to be used in the editor only for example. Thus, I would like to hide those assets from that window and force users to drag&drop these assets instead. Basically to make it very obvious, where those assets are coming from, such as from an editor folder. I toyed around with the texture hideFlags, but this doesn't seem to affect whether they're displayed in the "Select Texture" dialog. Please implement functionality to mark assets so they are not showing up in Unity' Select Texture window or any asset selection dialog basically. In my case, I only want to support drag&drop operations.