+/- Zoom Button's is missing after page loading.

[AntonOlkhovskyi]

Context

After complete page loading (Matrix, Family pages), Zoom Buttons does not appear in the right-bottom corner of the page.
If a user made any page update (filter, scroll etc.), Zoom Buttons become visible and can be used.

Steps to reproduce

Note: To reproduce an issue, please do not forget to clean browser cookie and cache data.

1. Open Dollar Street web page (Matrix, Family).
2. Wait to complete page loading with no actions.
3. Check right-bottom corner of the page.

Expected result

+/- Zoom Button's are present in the right-bottom corner of the page after loading and can be used.

Current result

+/- Zoom Button's is missing after page loading.

Platform

http://ds-dev.dollarstreet.org/dollar-street/matrix

Browsers

Chrome: Version 66.0.3359.139 (Official Build) (64-bit)
FF Quantum: 59.0.2 (64-bit)