Mwan3 rules with ipset

If it use eth0.2 (wan1) it is show the next gateway but if it use wlan0 (wan2) the next gateway is not showed....
is it strange?

traceroute google.com
traceroute to google.com (216.58.206.78), 64 hops max
  1   192.168.2.1  0,401ms  0,281ms  0,279ms 
  2   10.161.xx.xx  94,229ms  189,777ms  190,060ms 
  3   10.204.xx.xx  61,579ms  58,405ms  69,741ms 
  4   172.22.5.130  50,203ms  59,761ms  50,225ms 
  5   172.22.20.49  59,480ms  50,041ms  69,844ms 
  6   172.31.49.17  70,021ms  69,937ms  59,895ms 
  7   172.31.45.125  79,944ms  79,771ms  70,308ms 
  8   *  *  * 
  9   172.22.3.105  61,490ms  69,945ms  80,586ms 

traceroute google.com
traceroute to google.com (216.58.205.78), 64 hops max
  1   192.168.2.1  0,375ms  0,391ms  0,335ms 
  2   192.168.1.1  1,099ms  0,791ms  0,677ms 
  3   *  *  * 
  4   172.17.144.82  16,613ms  10,350ms  9,951ms 
  5   172.17.145.48  10,878ms  11,679ms  12,673ms 
  6   172.31.49.17  76,555ms  79,693ms  79,965ms 
  7   93.186.128.213  26,872ms  24,509ms  25,431ms 
  8   172.31.43.14  72,768ms  79,856ms  79,694ms

but the rules with ipset not works, I run two times traceroute of URL in ipset and this is the result:

traceroute xxxxxx.com
traceroute to xxxxx.com (85.114.xx.xx), 64 hops max
  1   192.168.2.1  0,430ms  0,316ms  0,309ms 
  2   10.161.xx.xx  60,716ms  249,954ms  49,947ms 
  3   10.204.xx.xx  89,940ms  49,961ms  49,961ms 
  4   172.17.144.156  10,702ms  9,663ms  12,022ms 
  5   172.17.145.126  13,657ms  11,430ms  12,451ms 
  6   172.31.49.17  79,684ms  70,979ms  108,959ms 

traceroute xxxx.com
traceroute to xxxx.com (85.114.xx.xx), 64 hops max
  1   192.168.2.1  0,569ms  0,412ms  0,414ms 
  2   192.168.1.1  1,137ms  0,840ms  0,725ms 
  3   *  *  * 
  4   172.22.5.130  59,527ms  59,758ms  59,841ms 
  5   172.17.145.122  14,964ms  12,058ms  11,953ms 
  6   172.31.49.17  70,689ms  70,062ms  69,921ms 
  7   172.31.45.125  110,097ms  139,451ms  121,635ms 
  8   172.31.43.14  78,312ms  120,268ms  79,514ms

sometimes goes on eth0.2(wan1) and sometimes on wlan0(wan2)