In the Open File pane, there is a file name extension selector to the left of the file name text field. If a file type is selected in this menu after a file has been selected from the files list, it will change the file extension as it does in the Save File pane. I feel like this is could be more useful as a selector that causes the file list to filter for only files of the selected type.

Current behaviour:

Open File Pane:

• files list lists all files of recognized types; file type selector is set to "ase" by default.
• on select file from files list: places filename in the filename text field.
• on select file type from extensions menu: replaces file extension in text field with selected extension.

Suggested behaviour:

Open File Pane:

• files list lists all files of recognized types; file type selector is set to "loadable types"* by default.
• on select file from files list: places filename in the filename text field.
• on select file type from extensions menu: files list displays only files with the selected extension; file name field unchanged.

• I'm using "loadable types" here as a stand-in for "all" or ".*" for reason that this option still only shows file formats ASEprite is actually capable of loading. The actual wording is less important than that it does.