I can confirm this issue on multiple PCs. Using any previous version, the DS4 with DS4Windows (either old version or new fork) works perfectly. After the recent Minecraft 1.13 updates, the left analog stick refuses to work with the old DS4Windows version and there is constant drift to the upper left side of the screen with the new fork.
I hope a fix can be found soon.
I can confirm the bug. Please fix ASAP