Factorio Forums

If a construction bot is scheduled to replace a module but has nowhere to place the old module it will:
* Fail to replace the module in the machine
* Cancel (all) the request for the module(s)
* Keep the request for module removal
* If there are enough modules available the robot will pick up another batch and repeat (carrying above robot hand capacity, I managed to get 46 modules into a single robot)

See video for example

Expected behaviour:
As many modules as the robot is carrying should be replaced, then it should stop and wait for logistic storage to put the old ones away

Thanks for the report, this should be fixed for the next release.

Reproduction on [2.0.21]

We haven't made a release since I fixed the issue, it will be in 2.0.22.

Confirmed fixed on [2.0.23]