Im using tosymbol in a device. There is a bug, when two devices are used in a set on different tracks, where tosymbol will concatenate messages from both devices (its very strange). This only happens when the device is closed (not being edited).
Try this, put this in a device in your set, then copy the device to a different track
– Pasted Max Patch, click to expand. –
Copy all of the following text. Then, in Max, select New From Clipboard.