Hello,
Right, it looks like You haven't changed the default LFA backup selection algorithm which is random
https://www.juniper.net/documentation/en_US/junos/topics/concept/backup-selection-ospf-overview.html
The selection of LFA is done randomly by selecting any matching LFA to progress
to the given destination
To change that, please add the following line:
set routing-options backup-selection destination 192.168.145.2/32 interface all metric-order root
HTH
Thx
Alex