Problem with "mosaic" gallery mode

Hello folks,

I use Jetpack as a main plugin for my photo galleries, but it’s been a while a problem with having my galleries in “mosaic” mode. If I choose to have it, some of my pictures doesn’t load anymore. When I choose different styling it appears as it should be.

I would be really thankful if anyone could help me to fix it.

https://ww.wp.xz.cn/plugins/jetpack/