When saving a new file, if to double-click the toolbar Save button (instead of single-click), two Save As dialogs are shown.

Steps to reproduce:
1. Create a new document.
2. Make some modifications, e.g. type a character.
3. Double-click Save button on the toolbar.

Expected result: one Save As dialog is opened

Actual result: two Save As dialogs are open, both accessible (they don't block each other, i.e. mutually non-modal).

Tested with LO 3.3.0.4 - 4.1.0.4, and AOO 4.0.

Considerations:

1. This bug is likely to occur if a user suffers from a locomotory disorder, or has a broken mouse that makes multiple clicks on a button press.

2. While this specific case is of low importance, it may happen that the same problem will be with other buttons (I haven't tested). There are some buttons that specifically need to be able to receive double-clicks (like, say, Style Paintbrush). But allowing to double-click some other may bring more problems, when an action will be unexpectedly triggered twice.