Danke für die schnelle Antwort.
Leider nutze ich keine Cloud und habe auch keinen Server.
Wie kann ich hier eine Screenshot-Datei hochladen (oder in das Textfeld integrieren), die nur auf meiner Festplatte liegt und deshalb keine http-URL hat?
I did not use two adblockers at the same time and with the same browser: The screenshots with or without ABL were done using the Pale Moon browser (v. 28.6.0.1, 64 Bit, unable to use WebExtension addons like ABP), while the issue report was done using the Waterfox browser (56.2.12, 64 Bit, that is compatible with WebExtension addons). In both cases, the filter lists were up to date. My computer is running under Win 7 pro.
In all cases the filter Lists (Easy List Germay+ Easy List, ABP filters) were up-to-date.
Thus, the effect is seen with both ad-blocking extensions using the same filter lists.