No. Never heard of any.
Just recommend not being at high SoC for extended periods of time, esp. in hot weather.
From looking at Leaf Spy, it looks like my Leaf has moved about 200 miles in the last 4 months due to not driving to work (due to lockdown and county health orders, work policy, etc.) and mostly driving my Bolt when I do drive (long story).
My '19 Bolt (bought end of Jan 2019) is only at 9,752 miles right now. From Onstar emails vs. current stats, looks like my Bolt has moved about 1000 miles between end of March and now.
'19 Bolt Premier
'13 Leaf SV w/premium (owned)
'13 Leaf SV w/QC + LED & premium (lease over)
Please don't PM me with Leaf questions. Just post in the topic that seems most appropriate.