Is there a limit to the size of a SysEx message on Firefox?

[sgerendasy]

I have a synthesizer which sends patch dumps with 4,688 bytes. On Chrome I am able to use WebMIDI.js and receive the entire patch dump. On Firefox I only receive the first 1024 bytes. Is this a Firefox limitation or is this configurable?

[djipco]

WEBMIDI.js does not impose a limit. So, I guess the limit comes from Firefox. Can you check if you are receiving several sysex events? Maybe Firefox is chunking the data to 1024 bytes by default and delivering the whole message in multiple chunks (in this case, multiple sysex events)?