Log-in with online change sporadically not possible (eliminated from PLC Designer V3.6)

Eliminated from:
PLC Designer V3.6
 
Behaviour of the new version:
If many editors are open, no error message appears.
 
What happens?
The following error message appears when making online changes:
Collection was modified; enumeration operation may not execute.

When does the problem occur?
The above-described error message may occur if too many editors are open when making online changes.

Which products are concerned?
PLC Designer from V3.5.0

Possible diagnostics:
None

Short-term measures/recommendations:
If possible, close all editors in the PLC Designer and repeat the download.

Evaluation:
If too many editors are open in the PLC Designer, it may happen that a project download/online changes will be cancelled with an error message.

URL for linking this AKB article: /en-de/go/akb/201304171/1/
森林舞会游戏