WebFig limitation when adding many untagged ports to a VLAN on CRS354

RouterOS General
1

Hardware:

  • MikroTik CRS354-48G-4S+2Q+RM

Issue:
When configuring VLANs through WebFig, in the Bridge VLAN table, I can add ports to the Untagged list normally at first.

However, after adding approximately 30 ports, the "+" button becomes disabled (greyed out) and it is no longer possible to add additional ports to the Untagged list.

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Expected behavior:
It should be possible to add all required ports (up to all 48 switch ports if needed) to the same VLAN as untagged members.

Observed behavior:

  • The issue occurs only in WebFig.

  • WinBox does not have this problem and allows adding more ports.

  • The configuration itself appears to be supported by RouterOS.

  • This looks like a WebFig UI limitation or bug rather than a VLAN or hardware limitation.

Additional information:

  • CRS354-48G-4S+2Q+RM

  • Issue reproduced consistently in WebFig.

  • WinBox works correctly with the same configuration.

Thanks.