Describe the bug
When multiple changes are detected since last time you view history, the diff from date does not start from the last history check but the next one. This means the diff does not show all changes since your last history view.

Version
v0.47.03

To Reproduce
Steps to reproduce the behavior:

• Add watch for "https://time.is/"
• Recheck
• Watch detects change and turns bold
• View History - last seen change is from 11:09:32
  
• Run recheck multiple times
• Watch detects multiple changes and turns bold
• View History - from date does not start at 11:09:32 so changes from 11:09:32 to 11:10:44 are included in the diff
  

Expected behavior
The history diff from date should start from last seen history date (11:09:32 in above example)

#2580 might be related