Bug#953887: supercollider: indexed help documents display as empty

["Peter P." <peterparker@fastmail.com>]

Package: supercollider
Severity: normal

Dear Maintainer,

in scide help pages such as
        Browse all documents by categories
or
        Index of all help files categorized under "Tutorials."
or
        Alphabetical index of all documents
or
        Alphabetical index of all classes
etc. do display as empty except for the filter header. This behavior is
not present with 3.11.0-beta1 from git.

-- System Information:
Debian Release: bullseye/sid
  APT prefers testing
  APT policy: (900, 'testing'), (500, 'stable'), (500, 'oldstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.19.0-6-rt-amd64 (SMP w/4 CPU cores; PREEMPT)
Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages supercollider depends on:
pn  supercollider-ide       <none>
pn  supercollider-language  <none>
pn  supercollider-server    <none>

Versions of packages supercollider recommends:
pn  supercollider-supernova  <none>

supercollider suggests no packages.