URGENT: Zoho Wiki searches return garbled nonsense

URGENT: Zoho Wiki searches return garbled nonsense

For at least the past few days, the Search function in Zoho Wiki has been returning only strings of random characters. Example search result:

The page name is readable, but the context body text is gibberish.  So something is obviously broken with either the index function or the retrieval and rendering function. On another wiki, some of the results are readable, but most are gibberish like the ones shown here. 
Issue GWZ1055