Long names in Landing Page Blocks on Firefox.

Steps:

1. Open Landing Page editor on Firefox.
2. Expand "Elements" section.
3. Use Inspect element on one of the existing landing page blocks.
4. Edit label <p class="ezs-block__label">.
5. Enter a very long value.
6. Submit change.
7. Verify how block name is displayed in menu.

Actual result: Please see attached screen-shot.