Bug in tables column data in postgres database

I am a backend(server side) developer and I am using postgres database for storing my data to database. I have find a big challenge working with postgres database(version 13) as I have find  major issue working with  column in table of database as data keep toggling its value. 

eg::

if I have stored data into table 

bike_table

======================================

bike_name    bike_prefix    bike_line

V111               V                  111

W222              W                 222

X333               X                  333

===========================================

if some other time if query is made for same table data might look like this

So usually bike_name  keep changing its name thats seems to me a toggling behaviour.

Please take this issue as bug and work on this.

Thanks and Regards,

Sarita