If the user wants to select files from more than one group, s/he needs to open all the needed group before starting selecting the files. This is needed because opening a group deselects the files already selected.
If the user needs to edit the filtering rules, s/he needs to change one rule at a time, otherwise all changes but the last are lost.
If DISPLAY is set to a meaningless or wrong value, gasgano does not start but does not display any error message either. If gasgano is run with the -debug option, an exception is generated.
To remove grouping for an instrument defined in the Preferences Editor, File Display & Grouping tab, please, simply empty the keyword(s) cell, but do not delete the row, otherwise an exception is generated when exiting the preferences editor.
The control keys associated to various functionalities sometimes cease to work when the focus is on another component.
The "File" column of the Navigation Panel sometimes cannot be resized, e.g. when the width of the Navigation Panel is too small to show all columns.
It is advisable to call a script rather than a viewer application, with the viewer let be run in the background. This avoids possible freezing of Gasgano.