Sheet apender not adding sheets, erases all other sheets

I have been working with a flow for months now, it worked perfectly up to a couple of weeks ago, when the sheet appender node even though it executes correctly it deletes other tabs (with other names) so only the last sheet appender appears, I haven’t found any configurations that might be causing this I’ve reinstalled the whole workbench and the issue persists. Any ideas?

Hi @inakic,

I was not able to reproduce the problem at KNIME 3.6 on Mac, what version of KNIME and what OS are you using?