Brief view 1-3 bars for solar

On gui-v2 brief view the PV is shown left hand side as bar(s) below the grid.

I have DC PV (MPPT) and AC PV with 5 single-phase inverters distributed on all three phases.

The brief view shows sometime one bar for PV and sometime two or three bars.

I tested with direct connection in LAN and via VRM but did not found a a pattern.

Any idea?

Cerbo GX MK1
Venus OS 3.60
VRM Site 382372
3x MP2 5K 3-phase
SmartMPPT 150/45
5 micro grid inverters on phase 1, 2 and 3