Based on your route table, if the destination IP matches the 192.168.X.0/24 network then the traffic should be routed to ASA. However, if it does not match and falls under the default route 0.0.0.0/0 then it will go to the Palo Alto because it has a higher priority than the default route over the WAN connection.
If you suspect that the traffic is not routing over the IPsec even if it matches the 192.168.X.0/24 destination subnet, then you may need to call Meraki support so they can check whether this is the case or not.
Hope this helps.
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