If I understand correctly, do all schools of Mahayana agree with the concept of Apratishtita (non-abiding) Nirvana ?
All doctrinal schools do. According to Yogācāra sources, apratiṣṭha nirvāṇa is the revolved basis (āśrayaparāvṛtti) that has eliminated the defilements without abandoning saṃsāra.
This is also related to the Trikāya doctrine (i.e three bodies). Emanation bodies (nirmaṇakāya) like Siddhārtha Gautama still display parinirvāṇa. According to Bhāviveka, this is done so that beings will become disgusted with saṃsāra and decide to take up the noble eightfold path.
OTOH, are there any (historical) non-Mahayana schools that agree with the same concept ?
Not that I'm aware of. However the term appatiṭṭha (Skt. apratiṣṭha) does occur in the Pāli Nikāyas in the context of an arhat's consciousness (e.g. SN 22.53) and also in the context of nirvāṇa (e.g. Udāna 8.1).