There’s a new hugin version online:
Changes since 2019.2.0
Fixes fast preview on HiDPI screens under GTK+3 and MacOS. Make fast preview screen zoomable with mouse wheel. Make hugin_hdrmerge aware of cropped intermediate images. Several improvements for command line tools (pto_var, pto_move, pto_gen, autooptimiser). More checks in GUI for strange user input. Fixes for several bugs.