I get similar with ghost image enabled in live view on 700d with newest nightly.
"ML ASSERT:
lv
at ../../src/raw.c:1854 (raw_lv_request), task livev_hiprio_task
lv:0 mode:3"
"ML ASSERT:
lv
at ../../src/raw.c:1854 (raw_lv_request), task livev_hiprio_task
lv:0 mode:3"