MIDI FX UI Freeze

jeffmhopkins

What’s the issue?

When a track has MIDI FX, sometimes the FX GUI freezes. Seems to be mainly on FX 1, and after pressing the encoder and changing encoder value. Doesn't seem to happen on all tracks, but in this case, it was on track 2 while track 1 FX all seemed to respond appropriately.

I was unable to remove FX 1 from track 2 because of this.

2025-09-30-21-30-54.mp4

56MB

How to reproduce

Create tthree tracks with note information
Add MIDI FX to track 1
Add MIDI FX to track 2
Switch between track

System info (if relevant)

Rlx version: 1.2

Screenshots or videos (if applicable)

Attached Video of hang

giu_reliq

Hi there, thanks again for the report 🙂

Just one quick question to better understand the situation: do you remember the actions you took on the device before finding this issue, or does it happen systematically every time?

jeffmhopkins

giu_reliq

I think I tracked it down: it's when the FX selection modal is visible, and switching tracks before making a selection.

Also if the effect was already chosen and I press the rotary knob, do not turn the encoder and pressed again (even though it shows the selected FX as selected), it removes the FX

Video here https://youtu.be/-AbeQ2okXyg

jeffmhopkins

I can check again tonight.

If I remember right:

I recorded notes on sequence for track 1
Added three note FX on track 1 (random, quantize, groove)
removed FX 3 (groove
Made a new sequence on track 2 and another on track 3
added FX to track 2, went to remove it, and had this stale issue pop up
Added another FX to track 2 (middle slot) and I'm able to edit and remove it just fine

FX 1 doesn't fully lock up the screen, but the FX stops responding visually or interacting with the knob

Like I said, I'll try again to replicate tonight for you to help narrow it down

giu_reliq

Hi,

Thanks a ton for the detailed report + video 🙏 Super helpful! I found the issue and I’m already working on a fix for the next update 🚀

Really appreciate the help!