Sign right click not executing command

Right clicking sign text doesnt seem to execute a command.

Rproduction steps:

1: place a sign and apply the following NBT data to it: {Text3:"{\"text\":\"\",\"extra\":[{\"text\":\"[+]\",\"color\":\"green\",\"bold\":\"true\",\"clickEvent\":{\"action\":\"run_command\",\"value\":\"/setblock -107 69 -9 redstone_block\"}},{\"text\":\" \"},{\"score\":{\"name\":\"Bombs\",\"objective\":\"data\"},\"color\":\"black\"},{\"text\":\" \"},{\"text\":\"[-]\",\"color\":\"red\",\"bold\":\"true\"}]}"}

2: Right click the [+] text

3:goto -107 69 -9