Pipedrive websites for logged in users not loading

[thomas-kuehn]

Read first: https://github.com/gorhill/uBlock/blob/master/CONTRIBUTING.md

Describe the issue

I am using pipedrive.com and the websites for, e.g. deals view (pipedrive.com/pipeline) and activities (pipedrive.com/activities) are not loading at all. It seems there are loading forever, meaning not to load at all.

One or more specific URLs where the issue occurs

pipedrive.com/pipeline (you have to be a logged as a user to see this)
pipedrive.com/activities (you have to be a logged as a user to see this)

Screenshot in which the issue can be seen

Steps for anyone to reproduce the issue

Try to visit the above mentioned sites. The sites are loading forever. This means they are not loading at all. If I deactivate uBlock they start to work again.

Your settings

• Safari version: 10.0.3
• uBlock Origin version: 1.11.1b
• MacOS version: 10.12.3

Your filter lists

all uBlock filters
Adblock Warning Removal List
Anti-Adblock Killer | Reek
EasyList

Basic tracking list by Disconnect
EasyPrivacy
Fanboy’s Enhanced Tracking List

Malvertising filter list by Disconnect​​​​​
Malware Domain List
Malware domains
Malware filter list by Disconnect​​​​​

Anti-ThirdpartySocial (see warning inside list)
Fanboy’s Annoyance List
Fanboy’s Social Blocking List

hpHosts’ Ad and tracking servers
Peter Lowe’s Ad and tracking server list

DEU: EasyList Germany
EU: Prebake - Filter Obtrusive Cookie Notices
FRA: EasyList Liste FR

• Block remote fonts

Your custom filters (if any)

[el1t]

Problem was the XMLHttpRequest blocking code: it throws an error to prevent the object from entering an invalid state, but in doing so breaks the calling code too. Opening an empty URL seems to fix the issue.