Gallery shows nothing in a modal.

[Vin-dellavv]

Expected behaviour

Being able to utilize the gallery in a modal (like zendesk garden one).

Actual behaviour

Only in the modal the Gallery component does not show any images.
I suspect in line 46 thumbnails is an empty array so thumbnails.map returns nothing because buildLayoutFlat -> buildLayout exits early on line 95.

Steps to reproduce behaviour

Here's a sandbox to reproduce it

Browser and version

Browsers: all,
Version: "react-grid-gallery": "^1.0.1"

[marulka]

Try to add some width to the container using CSS, or set drfaultContainerWidth prop to some value. Note: This is a workaround. The defaultContainerWidth should be set to some adequate minimum positive value, rather than 0.