LT3045 start-up problems

We are using the LT3045 in several rather simple designs with dual supply, such as: 

https://github.com/TU-Darmstadt-APQ/RedPitaya-Lockbox


You can find a snap shot of the power supply section below.
In all designs we are experiencing the same start-up problem:

Whenever the negative rail comes up first, the LT3045 will not turn on. If the positive rail comes up first, the LDO works as expected.

Has this problem occured to someone else? Can anyone recommend a solution that does not require a large overhead (e.g. power sequencing)?


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