Lichess analysis not displaying engine lines with infinite search time

[michaelwang2]

Exact URL of where the bug happened

https://lichess.org/analysis

Steps to reproduce the bug

1. Go to Lichess Analysis Board
2. Turn on infinite search time
3. Use engine Stockfish 17 NNUE (79 MB)
4. Go to a random position
5. The blue "plus" button to display current best lines as engine evaluation depth increases disappears quickly

What did you expect to happen?

Expect the blue "plus" button to not disappear. Expect when the blue "plus" button is pressed to display current best lines as engine evaluation depth increases.

What happened instead?

The blue "plus" button quicky disappears after page refresh. If I click it fast enough before it disappears the function works as expected.

Operating system

Windows 11

Browser and version (or alternate access method)

Chrome (Version 131.0.6778.140)

Additional information

No response

[allanjoseph98]

The plus button restarts analysis of a position if no analysis is ongoing. If you have set search time to infinite then you are always analysing->"plus" will not appear.

What exactly is the problem? That you don't see engine lines? Are you sure you don't have lines set to 0?

[michaelwang2]

I do see the lines but they don't update since the depth is stuck at some value (say 30). I would like to press the "plus" button and have the best lines continuously update as the evaluation depth increases for infinite time.

Often times the lines displayed (without the "plus" button being pressed) are not the actual best lines at that particular depth.

[ProjectHSI]

The plus button restarts analysis of a position if no analysis is ongoing. If you have set search time to infinite then you are always analysing->"plus" will not appear.

What exactly is the problem? That you don't see engine lines? Are you sure you don't have lines set to 0?

This behaviour should be more obvious and the plus button shouldn't appear at all - maybe a white line should be displayed for the progress of your evaluation when compared to the cloud evaluation.