Just a quick update, I have mailed out all orders back on 01/06/2020. For orders with tracking, I have been monitoring daily since.
It seems that apart from the US, other countries (UK/Australia) seem to have a longer delay in shipment out from Singapore. I will continue to monitor the status.
For new orders, please do read the previous post for more information. My processing time will remain unchanged for now and I will mail it out at the post office asap but the shipment out of Singapore may be substantially delayed.