Hi everyone,
I’ve been following the thread and wanted to jump in to provide some transparency on what’s happening. To be clear, this isn’t a bug that was introduced in a firmware update. This issue has only been reported a handful of times, so we have very limited data of the root cause, and are actively investigating and logging these cases to better understand what’s going on. But based on what we know, we think this is a hardware-level interaction. Over time, factors like physical screen degradation, debris, or powder on the display can sometimes cause trigger false touches on the touch screen. When we simplified the Fuse UI in 2024 to make starting prints faster (fewer taps), it inadvertently made it more likely for an unfortunately-placed ghost touch to initiate a priming cycle.
While we can’t “fix” the physical screen sensitivity via software, we have developed a preventative guardrail that should have been there in the first place. The upcoming firmware update introduces a check that blocks the printer from priming unless it detects that the build chamber and plug has been removed and reseated since the last print. This makes sure the machine won’t self-prime a Build Chamber with a finished cake.
We expect to ship this update within the next few weeks. Like I mentioned, this has been a very rare occurrence, but we know that this is a very severe problem for the few that has been affected. In the meantime, I can only recommend keeping your screens clean and free of powder, and removing your build chambers after a completed print. Rolling back to older firmware will not change anything, as the hardware sensitivity remains.
Thanks for your patience while we get this out to you. I will update here when it’s rolled out, but it will also be documented in the release notes here.