Rain Getting In Thru The Sliders
 

I have a lanai that is fully enclosed in glass sliders. When the heavy rain is wind whipped I get a little puddle by the end slider where the wind is hitting. Is that normal. There is a tiny opening where the frame meets the track. The glass sliders were installed at the end of 2019.

Beings it’s the lanai maybe it drain?

There are weep holes in the track to let the water drain out. Check that they are clear and they may need to be enlarged.

The weep holes are clear. It only happens occasionally when the wind is pushing the wind sideways, like today. I'm never home when it happens.

Any warranty where you just got them in 2019? Call installer and possibly get a free inspection when you explain the problem.