I tried this just now and I can confirm that the rendering in the actual document is not working. Seems like some upstream bug then, which needs investigation. Unfortunately there are no errors anywhere.
The reason for the crash was that the app by now needs more memory. The app package with more language packs is out now. However one needs to adjust the available languages in the coolwsd.xml via the filemanager, to enable them. An app restart afterwards is required.
This seems to be a highly app specific issue. As far as I remeber, code renders document tiles which is what appears to be rather slow for you. As those are possibly only very short amounts of time where cpu spikes, it may not show up, but might be worth looking at htop via SSH during scrolling and see if the CPU is the problem. Otherwise you probably have to seek help with the upstream project I guess.
@jdaviescoates Yes I still use mainly Collabora with Nextcloud and I have noticed tremendous improvements, especially since NC and Collabora have worked together to improve the integration.
However, I wouldn't say it is still quite like Google doc, or quite as fast as OnlyOffice. I tired OnlyOffice when I installed CryptPad and something about it feels more responsive than Collabora due to client rendering. It is basically just like editing on a desktop and Collabora is not quite there...but pretty close. Also we can feel that both Gdocs and OnlyOffice were designed as a collaborative editing tool whereas Collabora somewhat inherits the LO single user approach and tries to adapt it for collaboration and the result still does not feel quite as sleek....but here again it is getting much better than it used to be.
I can say that Collabora does not suffer from issues from the past, does not feel laggy and is perfectly fast enough to use while not feeling it's slow or weird. Also I do think it provides the most complete online office suit in terms of functionalities, and the best if you using open document formats.
Just to be 100% sure, are you using ownCloud and also are you using Cloudron? Cloudron had an ownCloud package but this has not been maintained for atleast 3 years now. Or maybe ownCloud is a non-Cloudron install but CODE is a Cloudron install? Please tell us more about your setup.
i have the same Problem
at home i use Cloudron 4.4.4 there int runs fine, but yesterday i installed a new clorudron installation v. 4.4.5 and ther i have problems with collabora.
when i open a word file from nextcloud the first time it opens, but when i close the file and 30s later i open it again collabora doesnt load, it stays at 1% loading and i cant opan any other file.
I've tried disabling all the other addons in Nextcloud, but no dice. I looked in the logs and there's nothing out of the ordinary.
Girish, I tried to replicate it on your setup, but I can't find anywhere to enable Collabora. I have the option where the documentation you posted says it should be on my Nextcloud instance, but on yours it's not there.