There should be a cutscene there where Icara shows up and heals Zandalor.
Please email email@example.com, with a description of the problem and a save before approaching Zandalor (if available; your latest if not).
For Windows you can use the report.zip file (or a Dropbox or Google drive link, etc) generated by the D:OS EE Analysis Tool. Extract the zip file somewhere and run AnalysisTool.exe. When that loads, browse to the install folder (if it is not automatically detected), optionally run the tests first, and then generate a report (it will be saved in the same location as the Analysis Tool).
The report will contain system and game information, as well as your saved games. To reduce the file size, you can delete all but one of the saves from the zip.
For OSX, saves can be zipped by right clicking the folder(s) and selecting Compress, in the folder: ~/Documents/Larian Studios/Divinity Original Sin Enhanced Edition/PlayerProfiles/<ProfileName>/Savegames
Linux is similar, with the saves in the home directory.
Oh, Icara is supposed to heal him? My party killed Icara a couple hours before that at the End of Time. Didn't realize it would essentially end the game because there wasn't any warning or indication that it would. If there isn't a workaround for this then I suppose I'll have to find a save before Icara was killed and play through from there. Thank you for the information.