Shower floor tiles taking 4 days to dry in the corners - Tile Advice

[LKC Design]

My new (1 month old) shower floor has 2" porcelain hexagon tiles. I noticed the grout stayed wet much longer in each bottom corner of the wall that is across from the shower head . About 4" of floor corner grout - both directions in 2 corners , and around the single tiles that are adjacent to the 4" of wall corner.
I stopped using the shower to see how long it would take for the grout to completely dry and it took a good 4 days.
The one unusual thing about my shower is that the width is slightly narrow ( only 30" wide from the shower head wall to the "problem wall", so the shower head sprays water directly on that wall. (vs spaying over the drain as would be the normal water flow.)
Self diagnosing, I thought maybe that wall got an excessive amount of water than is normal.
I did notice the grout has hairline cracking in those 2 corners, but I don't know if it is a result of not drying or was originally that way.
My tiler used Mapei grout that did not require sealing. Also it is grout along the bottom where the wall and floor meet, not silicone.
(In other threads I read silicone was sometimes used in that area instead of grout. )
Could you advise a solution? Should I have my tiler come and fix the grout or change it to silicone? Or is this normal?
I am worried about mold, because if the shower is used every day, (not every 4 days!) this area will never be dry. Thank you!

 

[Dave]

My new (1 month old) shower floor has 2" porcelain hexagon tiles. I noticed the grout stayed wet much longer in each bottom corner of the wall that is across from the shower head . About 4" of floor corner grout - both directions in 2 corners , and around the single tiles that are adjacent to the 4" of wall corner.
I stopped using the shower to see how long it would take for the grout to completely dry and it took a good 4 days.
The one unusual thing about my shower is that the width is slightly narrow ( only 30" wide from the shower head wall to the "problem wall", so the shower head sprays water directly on that wall. (vs spaying over the drain as would be the normal water flow.)
Self diagnosing, I thought maybe that wall got an excessive amount of water than is normal.
I did notice the grout has hairline cracking in those 2 corners, but I don't know if it is a result of not drying or was originally that way.
My tiler used Mapei grout that did not require sealing. Also it is grout along the bottom where the wall and floor meet, not silicone.
(In other threads I read silicone was sometimes used in that area instead of grout. )
Could you advise a solution? Should I have my tiler come and fix the grout or change it to silicone? Or is this normal?
I am worried about mold, because if the shower is used every day, (not every 4 days!) this area will never be dry. Thank you!

Morning, i wall to floor or tray transition should be siliconed and not grouted. There should also be no cracking of the grout joints.

 

[LKC Design]

Morning, i wall to floor or tray transition should be siliconed and not grouted. There should also be no cracking of the grout joints.

thank you. I will have my tiler fix those areas.