NFC emulation error: mfoc says "tag disappeared", cant read emaulated tag

Hi there.

I just got my flipper and first thing i did - tried to clone and emulate NFC Mifare Classic 1k tag.
The tag was readed successfully, but i faced with issues when i try to emulate the tag - other devices can’t read the emulated tag.

I tried to check with my acr122u reader with mfoc tool and got error

sudo mfoc -O flipper/acr122u_emulated_result.mfd
Error: tag disappeared

My phone with NFC also can’t read emulated tag.

Also I’ve tested other tags i have - the same issues with them.

FW version 0.69.1

Is there a bug or i just have screw hands?

Found the same issue here it seems to be software problem.