How to disable "title bars" in free layout

[Dreamer]

When using free layout, there are title bars for every panel, is it possible to disable them, or "lock" to free some space?

[xnview]

When using free layout, there are title bars for every panel, is it possible to disable them, or "lock" to free some space?

In free layout, you need to be able to move the panel, so title is need.

[Dreamer]

Right, but it's the same as in explorer toolbars, you can lock the toolbar if you don't want dividers and unlock anytime you want to move the toolbar items. Normally I don't need to move the panels often, so the option to hide the title bars of toolbars would solve this problem.

[Dreamer]

It's in the changelog, but I can't find option to disable title bars.

Edit: the title bar of preview is always visible now, not only in free layout, could you add option to disable it please?