Have you checked for onchain fee changes during 130 and 131? Some hours ago there were some oscilating onchain fees.

The balance on LND (and therefore) RTL will be calculated by LND taking into consideration the current onchain fees, and they have been oscillating a little bit today, for example block #874115 had fees up to 855sat/vB, while block #874116 had fees up to 262sat/vB.

Best, Jean-Paul Alby Support Team getalby.com