Why is RHEL 7 not sending a duplicate ACK upon packet loss?

Issue

• When packet loss happens, a duplicate ACK is sent to the other party:

frame.number    frame.time_epoch        ip.src  ip.dst  tcp.srcport     tcp.dstport     tcp.seq tcp.ack tcp.flags       tcp.analysis.retransmission     col.Info
960     1626857401.304366000    192.0.2.2     198.51.100.3   39816   20602   54974   204394  0x00000010              39816 > 20602 [ACK] Seq=54974 Ack=204394 Win=7700 Len=0
961     1626857401.327231000    198.51.100.3  192.0.2.2      20602   39816   204937  54974   0x00000018              [TCP Previous segment not captured] ExecutionReport
962     1626857401.327256000    192.0.2.2     198.51.100.3   39816   20602   54974   204394  0x00000010              [TCP Dup ACK 960#1] 39816 > 20602 [ACK] Seq=54974 Ack=204394 Win=7700 Len=0
963     1626857401.506469000    198.51.100.3  192.0.2.2      20602   39816   204394  54974   0x00000018      1       [TCP Retransmission] ExecutionReport
964     1626857401.506510000    192.0.2.2     198.51.100.3   39816   20602   54974   205379  0x00000010              39816 > 20602 [ACK] Seq=54974 Ack=205379 Win=7700 Len=0

• On occasion, the package includes an updated window which results in the other party not re-sending the lost package immediately:

frame.number    frame.time_epoch        ip.src  ip.dst  tcp.srcport     tcp.dstport     tcp.seq tcp.ack tcp.flags       tcp.analysis.retransmission     col.Info
1688    1626684601.865545000    192.0.2.2     198.51.100.3   43468   20602   130375  364653  0x00000010              43468 > 20602 [ACK] Seq=130375 Ack=364653 Win=8900 Len=0
1689    1626684601.866922000    198.51.100.3  192.0.2.2      20602   43468   371204  130375  0x00000010              [TCP Previous segment not captured] ExecutionReport
1690    1626684601.866932000    192.0.2.2     198.51.100.3   43468   20602   130375  364653  0x00000010              [TCP Window Update] 43468 > 20602 [ACK] Seq=130375 Ack=364653 Win=8991 Len=0
1691    1626684601.867037000    198.51.100.3  192.0.2.2      20602   43468   372664  130375  0x00000010              ExecutionReport
1692    1626684601.867045000    192.0.2.2     198.51.100.3   43468   20602   130375  364653  0x00000010              [TCP Window Update] 43468 > 20602 [ACK] Seq=130375 Ack=364653 Win=9082 Len=0