Hello, after months of debugging and having also not working HTTPS issues with Electron(https://github.com/electron)  packaged proprietary apps(Slack and Discord) while not having issues with other Signal(also based on Electron) , Chromium and Firefox were working I've started to digging around dynamic libraries of all those.
All those use NSS and PKCS#11 to lookup certificates and keys
I've found that the root cause was the ~/pki/nssdb/pkcs11.txt file. After moving it away file regenerated as described in newly reported bug #1993963. Besides this there were entries created for PKCS#11 token on Polish national ID ( PIV card with NFC layer): https://www.gov.pl/pliki/edowod/e-dowod-4.2.3.run.  leading to final form:
$ modutil -list -dbdir ~/.pki/nssdb/

Listing of PKCS #11 Modules
-----------------------------------------------------------
  1. NSS Internal PKCS #11 Module
	   uri: pkcs11:library-manufacturer=Mozilla%20Foundation;library-description=NSS%20Internal%20Crypto%20Services;library-version=3.68
	 slots: 2 slots attached
	status: loaded

	 slot: NSS Internal Cryptographic Services
	token: NSS Generic Crypto Services
	  uri: pkcs11:token=NSS%20Generic%20Crypto%20Services;manufacturer=Mozilla%20Foundation;serial=0000000000000000;model=NSS%203

	 slot: NSS User Private Key and Certificate Services
	token: NSS Certificate DB
	  uri: pkcs11:token=NSS%20Certificate%20DB;manufacturer=Mozilla%20Foundation;serial=0000000000000000;model=NSS%203

  2. Mozilla Root Certs
	library name: /usr/lib/x86_64-linux-gnu/nss/libnssckbi.so
	   uri: pkcs11:library-manufacturer=Mozilla%20Foundation;library-description=NSS%20Builtin%20Object%20Cryptoki%20Modu;library-version=2.50
	 slots: 1 slot attached
	status: loaded

	 slot: NSS Builtin Objects
	token: Builtin Object Token
	  uri: pkcs11:token=Builtin%20Object%20Token;manufacturer=Mozilla%20Foundation;serial=1;model=1

  3. e-dowód (64 bits)
	library name: /opt/e-dowod/e-dowod-pkcs11-64.so
	   uri: pkcs11:library-manufacturer=PWPW%20S.A.;library-description=PL-ID%20PKCS%2311%20API%20v.4.2.2.1;library-version=4.2
	 slots: There are no slots attached to this module
	status: loaded

  4. OpenSC smartcard framework (0.22)
	library name: /usr/lib/x86_64-linux-gnu/onepin-opensc-pkcs11.so
	   uri: pkcs11:library-manufacturer=OpenSC%20Project;library-description=OpenSC%20smartcard%20framework;library-version=0.22
	 slots: There are no slots attached to this module
	status: loaded

After trying to add and remove subsequent PKCS#11 modules I wasn't able to reproduce the bug anymore, I guess it could be due lack of seperating endlines in pkcs11.txt when the software modified it directly in txt file instead of using modutil command.

Regarding this particular bug I would leave it open -as the logging issue persist in case anyone would have similar bug - the error code NSS error code: -8018 is to enigmatic, even googling doesn't return much info. I needed to download source code to determine that -8018 means SEC_ERROR_UNKNOWN_PKCS11_ERROR . Even if one would get such error he should be provided with more information in terms of problem context, and if it's caused by external library which doesn't return those - name of that particular library and call stack.