Bug: Filling Value Miscalculation

[atakanerbas]

Describe the bug
After creating an asset and adding a historical balance (e.g., from one year ago), the graph incorrectly calculates the balance for the day before the balance change.
For example, my asset should increase from 10.000 TRY to 100.000 TRY, but it incorrectly shows 0 TRY for the previous day.

To Reproduce
Steps to reproduce the behavior:

1. Create an account (Investment & Brokerage)
2. Add a balance (~1 year before)
3. Navigate to the investment's page.
4. Check the graph. The dashboard graph is also appears broken.

Expected behavior
The asset graph should display the following: 10.000 10.000 10.000 .... 10.000 100.000, instead of 10.000 10.000 10.000 .... "0" 100.000

What version of Maybe are you using?
Self hosted v0.2.0

What operating system and browser are you using?
Device: M2 MacBook Air
OS: macOS Ventura 13.5
Browser: Chrome

Screenshots / Recordings
Graph:

Additional context
The issue is likely related to the balance creation logic rather than multicurrency handling. Exchange data exists for all dates.

[ManishMadan2882]

@atakanerbas Can I work on this issue ?

[zachgoll]

@atakanerbas can you please share the exact "Balance updates" you have on the Activity view for this account?

When an account is created, our system automatically creates 2 balance records:

1. $0, one day ago
2. $X (whatever balance you specify), today

If you haven't deleted the first balance record after adding the one a year ago, this is expected behavior. You can simply delete that balance update and your graph will calculate correctly.

[atakanerbas]

I see. If this is the intended behavior, then there is no bug.
However, I expected my asset to go directly from 10.000 to 100.000 without dropping to 0.
If I add a balance within the year, everything is correct except for yesterday.
However, nothing seems to make yesterday special in this scenario, at least from an end user's perspective.
Thanks!