Created attachment 181335 [details]
Video visualising the unexpected behavior of Alligator

SUMMARY
Opening a blog post and the clicking on another blog post won't replace the currently open blog post with the newly selected one, instead, it opens to the side in a new page. This makes navigating between blog posts cumbersome and is an unexpected behavior.

Another (separate?) bug is that after trying to navigate back to the list of blog posts (since the two open posts completely fill up the view), the "Navigate Back" button requires two presses to actually work.

STEPS TO REPRODUCE
1. Open Alligator
2. Add a feed, like Planet KDE
3. Click on a blog post
4. Click on a separate blog post
5. Press "Navigate Back" twice

OBSERVED RESULT
The second blog post opens to the side of the first one.
The "Navigate Back" button needs two clicks to work.

EXPECTED RESULT
The second blog post replaces the one that was open before it.
The "Navigate Back" button works with one click.

SOFTWARE/OS VERSIONS
Alligator: 25.07.70
KDE neon Unstable Edition (Wayland)
KDE Frameworks: 6.15.0
Qt: Using 6.9.0 and built against 6.9.0
Build ABI: x86_64-little_endian-lp64
Kernel: linux 6.11.0-25-generic

ADDITIONAL INFORMATION
This works with the default window size on a 1600*900px screen. It might behave differently with a different setup due to the convergent nature of Alligator.