If the shower drains and there is no leak then you will need to examine whether the leak is coming from missing grout between tiles on the shower walls.
Tile shower leaking around door.
Shower door leaks between glass.
Unfortunately the only way to fix this is to do the tile work over again.
Failure to do so puts more moisture behind the wall or under the floor which can cause mold rot in the wood structure or crumbling drywall.
Shower door leaks if applicable sometimes a shower leaking water can be due to the doors simply not doing their job of containing over spray and splashes from showering.
If your frameless shower door leaks from the sides then you can rectify this problem by installing a frameless shower door seal.
In fact caulk can make it worse.
If water is leaking through a shower door where two panes of glass meet a seal should be installed.
Check the door seal a common source of a leak in a corner shower is the bottom door seal.
The d i y video how to seal a big gap between tile floor and tile wall in a bathroom or shower.
If there is not enough of a slope back in towards the shower then the issue is likely being caused by the curb.
This is usually cause by water spraying from the leak in back of the wall.
One other sign of a shower leak behind the wall is the drywall tile in front of the valve becomes spongy.
Answer if water from your shower is leaking into a crawl space the problem is not the cementitious grout joints.
It shows how to seal a gap in the corner where the tile floor.
If your tile shower is leaking the cause of the leak must be found and addressed as soon as possible and definitely before you take a shower again.
All the caulk in the world may not prevent your shower and glass door enclosure from leaking.
There has to be an underlying problem with the shower pan s waterproof membrane.
In a corner shower the shower head sprays water directly onto the door exerting more force and water.
To do this focus on one wall at a time.
I have done posts in the past about not caulking the connection where tile shower and or tub enclosure meets the tub or the one piece shower base.
If your door has a lot of gap as the bottom then you can install a frameless shower door.
Determine where your shower is leaking.
If it s a shower valve leaking it s possible you can get at it from inside the shower but you may have to chisel away some tile to get it at for example.
Starting low on the wall splash or spray water on an isolated area and keep checking for leaks as you work your way up a couple of feet at a time.