VPN - Split tunneling problem

I have a really weird problem. I've installed NordVpn and the minute I connect with split tunneling turned on (doesn't matter if Rider is or isn't one of the apps to go through VPN) I get this error at startup:

Internal error. Please refer to https://jb.gg/ide/critical-startup-errors

java.util.concurrent.CompletionException: java.lang.IllegalStateException: failed to create a child event loop
at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:314)
at java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:319)
at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1702)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:668)
at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:665)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1.run(Executors.java:665)
at java.base/java.lang.Thread.run(Thread.java:834)

....

I turn off the VPN and Rider works just fine. No other app has any problem with it and split tunneling works (I see my own IP address when using browser for example). Rider also works when I disable split tunneling and just use VPN for everything but I really don't wanna do that.

I tried reinstalling Rider as well, did not help.