@DanQuixote What the OP is saying is that when you open up the launcher it does not show any mods that you may or may not have downloaded as shown below.
@YukiYumeCC and @Belisarius_565 However, if you just launch the game itself then you can just click the button that says “MODS”.
Then you can see exactly what mods you have installed and adjust them as you see fit.
Once you save you have to restart the game but that only takes a few moments. I hope this help you all until they sort out the launcher.