sometimes OpTeX boxes material that is not meant for typesetting, for example in \_loadtrick, to make sure that the file is read in vertical mode, he loads the file inside \vbox. This boxing process calls for the vpack_filter callback, and I think it is redundant. Replacing \vbox with \vpack in such cases can prevent that.
sometimes OpTeX boxes material that is not meant for typesetting, for example in
\_loadtrick, to make sure that the file is read in vertical mode, he loads the file inside\vbox. This boxing process calls for thevpack_filtercallback, and I think it is redundant. Replacing\vboxwith\vpackin such cases can prevent that.