Incorrect detection of removed rows

[devTS123]

Hello,

An unexpected/inexplicable to me behaviour occurred when I received a notification about a page modification:
I had selected a larger section of a page for monitoring purposes. The filter is working, and the expected text is displayed in the preview.

Now, a sentence within that section was modified.

However, in the change notification, it indicated that all the other (unchanged !) lines had been "removed" and the modified sentence was marked as "inserted" at the end of the notification. I would have expected the unchanged content not to be displayed as "removed" and the inserted content would be inside the whole text preview, not at the end.

How can this happen?

In my email notification, I am using {{diff}}. However, even on the "History" page, the page comparison shows that the unchanged sections are allegedly marked as "removed."

[devTS123]

Well, maybe I found a solution myself: under Filters > Text filtering, the item "Removed lines" must be checked. If it is checked, one site works. If not, another page of the same site does not work....

Interesting...