OpenCV baseline features raised with kdenlive-19.08.1b-x86_64.appimage

When trying to run kdenlive-19.08.1b-x86_64.appimage on Linux Mint 19.2, I receive:

******************************************************************
* FATAL ERROR:                                                   *
* This OpenCV build doesn't support current CPU/HW configuration *
*                                                                *
* Use OPENCV_DUMP_CONFIG=1 environment variable for details      *
******************************************************************

Required baseline features:
SSE - OK
SSE2 - OK
SSE3 - OK
SSSE3 - NOT AVAILABLE
SSE4.1 - NOT AVAILABLE
POPCNT - OK
SSE4.2 - NOT AVAILABLE
terminate called after throwing an instance of 'cv::Exception'
  what():  OpenCV(4.1.0) /build/deps-build/ext_opencv/ext_opencv-prefix/src/ext_opencv/modules/core/src/system.cpp:538: error: (-215:Assertion failed) Missing support for required CPU baseline features. Check OpenCV build configuration and required CPU/HW setup. in function 'initialize'

/tmp/.mount_kdenliFbOhZq/AppRun: line 26:  6237 Aborted                 (core dumped) kdenlive --config kdenlive-appimagerc $@

This error seems like it could be accurate, as I have an older processor, an AMD Phenom II. However 19.08.1 (non-B) works fine. Was increasing the required OpenCV baseline features intended for this release? Was this related to solving #3 (closed)?