File browser inside Maya, Thumbnail generation
When you choose an image-file, e.g. for a file-node to use it for lighting, or for an imageplane.
You click the file and depending on size it takes a while for the preview in the file-browser to show up.
If you don't need this preview and you know it is _this_ file you want, and immediately click/doubleclick on this file, to choose it, this doubleclick won't "pass" (and do what it should) unless it already has a thumbnail.
So my point is: doubleclick on a file should, with or without a thumbnail, choose this file, not activate the thumbnail-generation-process, like the normal click does.
Note: for me, this only occurs with big files, where it takes a "long enough" time to generate the thumbnail; which makes it look more like a bug?