There is something wrong with some of my plans and don't know what is it.

   

Too much water?

or

any previous moisture-dome touching and/or removed?

I would ask the same thing, either too much water on leaves or very low humidity can cause that.

Sunburn is another possibility if it was recently moved to the window from a darker spot.

James is correct.  This is sunburn.  You didn't properly acclimate your plants to direct sunlight.  Also called "leaf scorch".  See:  http://figs4funforum.websitetoolbox.com/post/This-is-what-quotleaf-scorchquot-looks-like-5304488?highlight=leaf+scorch

Thank you,

The dark edges on the left hand photo looks like the result of root damage. I can link to some pics later. The white void on
The leaves is absolutely sunburn.

Ok. Here is the thread about the dark green/wilted edges:
http://figs4funforum.websitetoolbox.com/post/Some-tips-on-uppotting-5390290

Did you recently up-pot your figs? Did you recently fail to water for a couple of days to the point the leaves drooped extremely?

I did not up pot these plants. Unlike the pictures from the above tread in my case only the older leafs are affected. I never left my plants without water.  One thing to consider is that in the soil mix i have some composted cow manure which may be one possible reason for my problems.