Replaygain volume randomly increases

[silvestron]

Bug report

Describe the bug

Replaygain volume randomly increases when using mpc seek or a seekbar.

Expected Behavior

Replaygain should not change by this action.

Actual Behavior

The volume gets way too loud and noticeably clips, I noticed this first when using ncmpcpp while playing an opus song with very low replaygain. Using the seekbar a few times causes the volume to raise and it remains like that. The same thing happened using mpc seek +10/-10 a few times. It doesn't happen right away, it might take 20 attempts.

When this bug occours, the log shows

decoder_thread: probing plugin opus
decoder: audio_format=48000:16:2, seekable=true
[...]
replay_gain: scale=1.7782794

Version

0.23.15

Configuration

music_directory		"~/music"
sticker_file			"~/.local/share/mpd/sticker.sql"

bind_to_address		"localhost"
port				"6600"

database {
       plugin "simple"
       path "~/.local/share/mpd/db"
       cache_directory "~/.cache/mpd/cache"
}

audio_output {
        type "pipewire"
        name "PulseAudio"
}

replaygain			"auto"
replaygain_limit		"yes"

Log

client: [2] command returned 0
client: [2] process command list
client: process command "status"
client: command returned 0
client: process command "currentsong"
client: command returned 0
client: [2] process command list returned 0
decoder_thread: probing plugin opus
decoder: audio_format=48000:16:2, seekable=true
client: [2] closed
output: opened "PulseAudio" (pipewire) audio_format=48000:16:2
replay_gain: replay gain mode has changed off->album
replay_gain: scale=1
replay_gain: scale=0.06716584
client: [3] opened from [::1]:45446
client: [3] process command "seekcur "+10""
client: [3] command returned 0
client: [3] process command list
client: process command "status"
client: command returned 0
client: process command "currentsong"
client: command returned 0
client: [3] process command list returned 0
client: [3] closed

[...]

client: [19] opened from [::1]:54244
client: [19] process command "seekcur "+10""
decoder_thread: probing plugin opus
decoder: audio_format=48000:16:2, seekable=true
client: [19] command returned 0
client: [19] process command list
client: process command "status"
client: command returned 0
client: process command "currentsong"
client: command returned 0
client: [19] process command list returned 0
client: [19] closed
replay_gain: scale=1.7782794
client: [20] opened from [::1]:54252
client: [20] process command "seekcur "-10""
decoder_thread: probing plugin opus
decoder: audio_format=48000:16:2, seekable=true
client: [20] command returned 0
client: [20] process command list
client: process command "status"
client: command returned 0
client: process command "currentsong"
client: command returned 0
client: [20] process command list returned 0
client: [20] closed
replay_gain: scale=1.7782794