Hi,
I can't see anything in the issues/notes database about this issue specifically. so I had a look at this fixed issues list for ios 6.1.11 https://websmp204.sap-ag.de/~sapidb/012002523100020998122014E/6111_mobiOS_FixedIssues_en.pdf
and there's nothing related to 'crash' workflows beyond 6.1.9's fix "When you open the Web Intelligence report and change the sections within the high level section, the report crashes."
in a similar ballpark is 2074213 - Incorrect formatting of negative values in Webi report
viewed in SAP Mobile BI for iOS but that's for Geo and no crash - still being investigated by DEV
if you've found a systematically reproducible workflow *that can still be reproduced on 6.1.11 (or highest at time of writing)* I'd recommend logging a ticket with support component MOB-APP-BI-IOS - it would be great to get fixed quickly
regards,
H