lost stderr in console



I used to set makeflags like below,so that only message from stderr will be shown in console while compiling, and at the same time message from stderr and stdout will all be saved in xxx.log.
COMMAND MAKEFLAGS= set -eo pipefail && sh xxx.sh 2>&1 >> ${LOG_FILE_DIR}/xxx.log | tee -a ${LOG_FILE_DIR}/xxx.log

But after updating edk2 from 201903 to 202011, the message from stderr is not shown in console any more. In xxx.log, the message from stderr and stdout are still saved.
Do anything change in edk2 may affect on it ?

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