Server Version#: 4.87.2
Player Version#: 1.23.2.3194
OS: Win 10
The alt + s / alt + shift + s shortcuts have stopped working and no longer change the subtitle delays.
In the input map, I can see the shortcut is certainly there:
"Alt\\+S": "increase_subtitles_delay",
"Alt\\+Shift\\+S": "decrease_subtitles_delay",
This seems to have occurred over the last update or two.