many thanks for choosing SphereTester!
Can you please confirm that from the list you are opening the chart that has a _ST suffix after the name of the symbol (see screenshot below).
SphereTester generates it’s own offline charts to avoid conflict with other indicators and scripts and these are marked with the _ST suffix. Only these charts are updated while the backtest is running.
If this doesn’t help please have a look in the Journal tab of the tester and take a screenshot of it for me.
Please let me know how you get on.