Interface -> Diagnostics -> Trace route not respecting source address selected

[fgendorf]

Hi, I trying diagnose some problems in my network and I try trace route between my router and a specific site, but doesn't matter the source address I choose, the trace route always out from gateway marked as (active).
I have 3 gateways from different ISP, is it a misconfiguration or is as expected?

ISP-2

# /usr/sbin/traceroute -w 2 -n  -m '18' -s '187.49.XXX.XXX'   'google.com'
traceroute to google.com (142.251.129.78) from 187.49.XXX.XXX, 18 hops max, 40 byte packets
 1  177.53.XXX.XXX  0.156 ms  0.210 ms  0.143 ms
 2  10.101.101.0  2.679 ms  2.375 ms  2.372 ms
 3  172.31.23.17  3.140 ms  2.235 ms  2.217 ms
 4  172.31.31.253  2.079 ms *  2.182 ms

ISP-3

# /usr/sbin/traceroute -w 2 -n  -m '18' -s '200.232.XXX.XXX'   'google.com'
traceroute to google.com (142.251.129.78) from 200.232.XXX.XXX, 18 hops max, 40 byte packets
 1  177.53.XXX.XXX  0.167 ms  0.218 ms  0.154 ms
 2  10.101.101.0  3.090 ms  2.414 ms  2.320 ms
 3  172.31.23.17  11.007 ms  2.084 ms  2.127 ms
 4  172.31.31.253  1.972 ms  1.938 ms  1.986 ms

ISP-(active)

# /usr/sbin/traceroute -w 2 -n  -m '18' -s '177.53.XXX.XXX'   'google.com'
traceroute to google.com (142.251.129.78) from 177.53.XXX.XXX, 18 hops max, 40 byte packets
 1  177.53.XXX.XXX  0.262 ms  0.160 ms  0.148 ms
 2  10.101.101.0  4.328 ms  2.644 ms  2.315 ms
 3  172.31.23.17  2.268 ms  2.227 ms  2.214 ms
 4  * 172.31.31.253  2.000 ms *

Thanks for the help