Kaspersky antivirus breaks Firestore ("Could not reach Cloud Firestore backend.")

Problem

UPDATE [by @mikelehen 2018/10/21]: This issue has morphed into specifically being about the Kaspersky antivirus software blocking Firestore. Please open a separate bug if you're encountering issues without Kaspersky. Environment Operating System version: Windows 10 Browser version: Chrome 68.0.3440.106 Firebase SDK version: 5.4.2 Firebase Product: store Problem Im using Firestore with Ionic (Angularfire2 package). Any collection or doc gives error but after ~10 seconds it gives data. Auth works without any problems. Error: [code block] Created new Firebase Project and new Ionic project, installed packages, tried to make collection, shows same error. [code block] The code im trying to run: [code block] And the console output: [code block]