Well, that was quick. Microsoft has now pushed out a fresh update to the Skype Preview app, bringing along a fix for a bug that was causing the app to incessantly crash for some users after a previous update.

Microsoft updates Skype Preview with fix for crashing issues

According to a post on the Feedback Hub, the update is currently rolling out to Fast ring Insiders and should make its way out to Slow and Release preview rings relatively soon. From Microsoft:

On 12/14 Skype Preview version 11.10.146 was released to all Insiders. There has been many reports of users experiencing crashes upon app start. We just wanted to let you know that we are aware of the issue and have already identified the root cause. The fix, Skype Preview version 11.10.147.0, is already available for Insiders on the Fast ring and will be rolling out to Insiders on Slow and Release preview soon. Apologies for any inconvenience this may have caused and thanks for reporting it to us.

According to posts on a Reddit thread about the issue, some users have already started receiving the fix on Release Preview, so it's likely available to all Insiders, regardless of release ring, right now. If you previously downloaded Skype Preview version 11.10.146.0 and had issues with the app crashing, be sure to check for an update now and see if it remedies your problem.

Thanks to everyone for the tips!

Download Skype Preview from the Windows Store