When editing an existing file and saving it, size grows up 3MB

[BTDCR]

Hello! I'm working with .pbix files that usually weight 200-300kb, but since a few weeks ago, if I do evenn a small change (example fix a table size), not even adding or touching data, when I save it will turn into a 3200-3300kb file. 

Is anyone else experiencing this? Is there a way to change it? 

[v-chuncz-msft]

@BTDCR 

You may check the storage mode for each table and also try creating a new report.

[BTDCR]

@v-chuncz-msft  It grows only when I save it, but using the same file and dataset, when a colleague saves any changes, it goes down to 200-300kb. So I doubt it's a setting inside the tables, it's more likely to be something on my PowerBi version (aka it has ann update the other person doesn't have, or I don't know, I haven't customized it since I downloaded.)