What I did:
 
	I installed a fresh copy of the launcher. I tried two separate distributions (two separate launchers), both the latest version. They both support Minecraft 1.14.4. 
 
	I assume they both are using <user>\AppData\Roaming\.minecraft as the game directory. 
 
	I installed forge-1.14.4-28.1.0-installer in that game directory (default). 
 
	I started the launcher. 
 
	I selected the Forge profile. Edit profile. Selected to use version: release 1.14.4. 
 
	Selected D:\Java\jdk1.8.0_221\bin\javaw.exe for the Java executable explicitly, since I also have a JDK 11 installed. 
 
	(When I select Java 11 I have to remove  -XX:+CMSIncrementalMode from the JVM args to get Minecraft started, with or without Forge installed). 
 
	I save the profile and start Minecraft (play).
 
	No Mods button. 
 
	?