We are usingthe UNO library to edit template in LibreOffice. The existing implementation was developed using LibreOffice 6.4.4. With this version this worked without any problems. Likewise with version 7.0.0. With version 7.1.7 the problem described could be reproduced. The assumption is that this problem exists as of version 7.1.0.

var vDoc = _config.FrameLoader.loadComponentFromURL(urlTemplate, "_top", 0, null);
_config.UpdateFrame(this.Info, vDoc);

The following points must be observed when using or checking the current LibreOffice version (currently 7.2.4 x86)