[WebPositive] Massive memory consumption for heise.de

[taos]

I'm on hrev50943 64bit at the moment, running either from a partition mounted in Virtualbox or on bare metal booting from the same partition with haiku_loader.efi, WebPositive is using HaikuWebKit 1.5.4 (WebKit 602.1.1).

Whenever I open "heise.de", the memory used by WebPositive grows very fast until all of my RAM (2 GB for Virtualbox, 8 GB if I'm booting into Haiku) is consumed and Haiku freezes completely (takes no more than a few minutes). If I close the heise.de tab before reaching that point, memory consumption goes down almost immediately.

Not sure if this is relevant: when starting WebPositive from Terminal I get the following lines with the last message repeated several times:

Create 0:1
MESSAGE https://ssl.ligatus.com/render/ligrend.js?ts=2.9:28:6655: No page URL detected. Skipping RCE call...
MESSAGE https://tpc.googlesyndication.com/pagead/gadgets/html5/layout_engine.js?:144:467: Blocked a frame with origin "https://tpc.googlesyndication.com" from accessing a frame with origin "https://www.heise.de". Protocols, domains, and ports must match.
MESSAGE https://tpc.googlesyndication.com/pagead/js/r20170206/r20110914/activeview/osd_listener.js?:1:16499: Blocked a frame with origin "https://tpc.googlesyndication.com" from accessing a frame with origin "https://www.heise.de". Protocols, domains, and ports must match.