https://www.theregister.com/2024/05/07/dillo_browser_v3_1/
I don't know if you saw that, but I asked a question in there I am still curious about. In the long time period that Dillo was largely idle, there were various forks.
I know of 2 that seem to be dead now...
DilloNG
https://github.com/w00fpack/dilloNG
D+
https://sourceforge.net/projects/dplus-browser/
But two others seem to be active...
Dillo-Plus
https://github.com/crossbowerbt/dillo-plus
<- active as recently as September 2024, i.e. since my article.
Mobilized Dillo:
https://www.toomanyatoms.com/software/mobilized_dillo.html
<- active last month -- and the page links to an article of mine. Nice. :-)
I wondered if you were in communication with any of those developers, and if you have managed to bring in any of their code or improvements?
FLTK is now up to 1.4.4, released in July.
https://github.com/fltk/fltk/releases/tag/release-1.4.4
Are you using the latest FLTK?
Just curious, not challenging or anything.