MP-0.78x64Linux: Web Capture issues

[oops66]

Hello,
I just noticed some errors with "Create/Web Capture..." (in some "jquery" pages), is it normal?
For exemple, here:
http://webdesignerwall.com/demo/html5-grayscale/
or here:
http://jsfiddle.net/bG4gR/

PS: And if I use several times this functionality, the memory is saturated and the swap disk switches "on" (even if I close the XnViewMP windows/tabs)... so I suspect some memory leaks ?

[xnview]

currently i use old Webkit engine, but i must use new Qt Web API

[oops66]

currently i use old Webkit engine, but i must use new Qt Web API

Merci pour l'information Pierre.