Embedded subtitles do not work in version 10.5.2

[eltiel]

Describe the bug
Embedded subtitles do not show up in version 10.5.2. Worked fine in 10.5.0.

System (please complete the following information):

• OS: Synology DSM
• Virtualization: Docker
• Clients: Android, Web
• Jellyfin Version: 10.5.2
• Playback: All modes
• Reverse Proxy: nginx
• Base URL: None
• Storage: Local

To Reproduce

1. Play files with embedded subs --- Tested with SUBRIP and ASS subs
2. Subs do not show up

Expected behavior
Subs should show up

Logs
log_20200323.log

This error seems to be of suspect:

System.ArgumentException: Stream was not readable.
   at System.IO.StreamReader..ctor(Stream stream, Encoding encoding, Boolean detectEncodingFromByteOrderMarks, Int32 bufferSize, Boolean leaveOpen)
   at MediaBrowser.MediaEncoding.Subtitles.SrtParser.Parse(Stream stream, CancellationToken cancellationToken)
   at MediaBrowser.MediaEncoding.Subtitles.SubtitleEncoder.ConvertSubtitles(Stream stream, String inputFormat, String outputFormat, Int64 startTimeTicks, Int64 endTimeTicks, Boolean preserveOriginalTimestamps, CancellationToken cancellationToken)
   at MediaBrowser.MediaEncoding.Subtitles.SubtitleEncoder.MediaBrowser.Controller.MediaEncoding.ISubtitleEncoder.GetSubtitles(BaseItem item, String mediaSourceId, Int32 subtitleStreamIndex, String outputFormat, Int64 startTimeTicks, Int64 endTimeTicks, Boolean preserveOriginalTimestamps, CancellationToken cancellationToken)
   at MediaBrowser.Api.Subtitles.SubtitleService.Get(GetSubtitle request)
   at Emby.Server.Implementations.Services.ServiceExecGeneral.GetTaskResult(Task task)
   at Emby.Server.Implementations.Services.ServiceHandler.ProcessRequestAsync(HttpListenerHost httpHost, IRequest httpReq, HttpResponse httpRes, ILogger logger, CancellationToken cancellationToken)